Seburt Nelson Connor, a Florida death row prisoner, appeals from the District Court’s denial of his petition for writ of habeas corpus, brought pursuant to 28 U.S.C. § 2254. The District Court granted Mr. Connor a certificate of appealability (COA) for these two issues: (1) whether the District Court erred by denying petitioner’s second motion for a competency hearing and stay; and (2) whether the District Court erred in denying petitioner’s motion for a neurological expert to assist him in proving his present incompetency. This Court expanded the COA to include a third issue: “[wjhether Petitioner received ineffective assistance of counsel during the penalty phase, as a result of his trial attorney’s failure to properly investigate and prepare for this part of the trial, as well as the failure to present mitigation evidence.” After careful review and oral argument, we affirm.
I. BACKGROUND
In December 1992, a Dade County, Florida grand jury indicted Mr. Connor on four counts: (1) first degree murder of Lawrence Goodine; (2) first degree murder of Jessica Goodine; (8) kidnapping Jessica; and (4) burglary with assault and battery of Lawrence. In 1998, a Florida jury convicted Mr. Connor as charged. Connor v. State, 803 So.2d 598, 604 (Fla.2001) (Con-nor I). The brutal facts and circumstances surrounding Mr. Connor’s crime and establishing his guilt, not contested here, are detailed in the Florida Supreme Court’s direct appeal opinion affirming his convictions and sentence of death. See id. at 601-04. Here we will focus on those facts most relevant to the issues identified in the COA.
A. Pretrial Competency Hearings in 1996 and 1998
Prior to trial, the state trial court conducted two separate competency hearings and found that Mr. Connor was competent to stand trial. Connor I, 803 So.2d at 604. The first pretrial competency hearing was held in 1996 after trial counsel announced that three defense experts, including psychologist Bill Mosman and neuropsychologist Hyman Eisenstein, had found Mr. Connor to be incompetent. The trial court appointed psychiatrist Sanford Jacobson and psychologist Lazaro Garcia to evaluate Mr. Connor. The trial court then conducted the first competency hearing at which time Drs. Mosman, Jacobson, Eisenstein, and Garcia testified. Drs. Mosman and Eisenstein testified that Mr. Connor was incompetent while Drs. Jacobson and Garcia testified that he was competent. On June 10, 1996, at the conclusion of this hearing, the trial court found Mr. Connor was competent to stand trial.
Mr. Connor’s case was first set to go to trial on June 19, 1997. But before jury selection was completed, Mr. Connor’s counsel informed the state that he had doubts about his client’s competency. In turn, on June 24, 1997, the state raised the issue of Mr. Connor’s competency and the trial court dismissed the venire and appointed neuropsychologist Jane Ansley, *612psychiatrist Edward Herrera, and psychologist Eli Levy to evaluate Mr. Connor for competency. A competency hearing was held with these witnesses on January 20, 1998, and Drs. Levy, Herrera, and Ansley all testified that Mr. Connor was competent. Once again, the state trial court determined that Mr. Connor was competent to stand trial.
B. Trial and Direct Appeal
Mr. Connor’s trial began in January 1998. The state presented evidence that Mr. Connor bludgeoned Lawrence Goodine to death with a chair leg and then dumped his body in the woods. Connor I, 803 So.2d at 602-03. There was also evidence that Mr. Connor kidnapped and strangled Jessica, Mr. Goodine’s 10-year old daughter. Id. at 603-04. Police found Jessica’s body wedged between a bed and a wall in a cottage on Mr. Connor’s property, and Mr. Goodine’s blood on Mr. Connor’s clothes and in his car. Id. at 603. Mr. Connor testified in his own defense during the guilt phase of the trial, and claimed that the “State planted the evidence and Jessica’s body in his house.” Id. at 604. The jury convicted Mr. Connor as charged. Id.
During the penalty phase, the medical examiner testified that the physical evidence showed Jessica Goodine struggled before she was choked to death and would have experienced panic and fear of impending death. The defense presented the testimony of several witnesses, including Mr. Connor’s immediate family members, two correctional officers, two psychologists (Dr. Eisenstein and Dr. Mosman), and Mr. Connor himself. In rebuttal, the state presented the testimony of psychologist Lazaro Garcia who had examined Mr. Connor for competency on four separate occasions during 1996. After hearing the penalty phase evidence, the jury recommended death by an eight-to-four vote for the killing of Jessica Goo-dine and life for the killing of Lawrence Goodine. Id. at 604.
The trial court sentenced Mr. Connor to death, finding five statutory aggravating circumstances applied to Jessica Goodine’s murder: (1) the defendant had a previous capital felony conviction (murder of Lawrence); (2) the murder was committed while the defendant was engaged in the commission of a kidnapping; (3) the murder was committed to avoid arrest; (4) the murder was heinous, atrocious, or cruel; and (5) the murder was cold, calculated, and premeditated. See id. at 604. Although the trial court did not find any statutory mitigation,1 it did find the non-statutory mitigating circumstance that Mr. Connor suffered from mental illness at the time of the offense, which it gave “substantial weight.”2 Id. The trial court also *613found the following nonstatutory miti-gators which it gave small or little weight: (1) he was a good father; (2) he will die in prison if given a life sentence; and (3) he had no disciplinary problems in prison. Id. The trial court concluded the aggravating circumstances outweighed the mitigating ones. See id.
On direct appeal, Mr. Connor raised six claims, one relating to a motion to suppress and five relating to his death sentence.3 Id. at 604. The Florida Supreme Court struck the avoid-arrest aggravator, but affirmed Mr. Connor’s convictions and death sentence. Id. at 612-13. Despite the invalid aggravator, the court concluded beyond a reasonable doubt that the error did not affect the sentence because the four remaining aggravating circumstances supported a death sentence based on the circumstances of the case. Id. at 610-12. The United States Supreme Court denied certiorari review. Connor v. State, 535 U.S. 1103, 122 S.Ct. 2308, 152 L.Ed.2d 1063 (2002).
C. State Postconviction Proceedings and Third Competency Hearing
In 2003 Mr. Connor filed, through newly appointed counsel Israel J. Encinosa, a Florida Rule of Criminal Procedure 3.851 motion for postconviction relief.4 Connor v. State, 979 So.2d 852, 857 (Fla.2007, as clarified April 10, 2008) (Connor II). After a Huff hearing,5 the state postconviction court granted Mr. Connor an eviden-*614tiary hearing on his claim that trial counsel was ineffective for failing to investigate and present evidence of Mr. Connor’s childhood as mitigation during the penalty phase.
Prior to the evidentiary hearing, post-conviction counsel Encinosa filed an emergency motion seeking to have Mr. Connor evaluated for competency. The postcon-viction trial court appointed Dr. Ansley to conduct the evaluation. The court held a competency hearing on February 18, 2004, which was the date the evidentiary hearing had been scheduled to begin. Dr. Eisenstein, a neuropsychologist, testified for the defense and reaffirmed his opinion that Mr. Connor was not presently competent to proceed and assist his attorneys because of his deteriorating condition. Neuropsy-chologist Ansley testified that she had evaluated Mr. Connor the day before the competency hearing; Dr. Ansley concluded that Mr. Connor was competent, had adequate recall of details, and would not have problems presenting pertinent facts to his attorney. Based upon the testimony of Drs. Eisenstein and Ansley, as well as the postconviction trial court’s personal observations of Mr. Connor in the courtroom, the court determined that Mr. Connor was competent to proceed. Further, the post-conviction trial court found that Mr. Con-nor was as competent then as he had been at trial, and that Connor understood the proceeding and was able to aid and assist his counsel.
After finding Mr. Connor was competent to proceed, the postconviction court immediately began the evidentiary hearing on the merits of Mr. Connor’s penalty phase ineffective assistance of counsel claim. Mr. Connor presented the testimony of Dr. Eisenstein, Krinerecess Connor (Mr. Con-nor’s cousin), Garla and Erica Connor (Mr. Connor’s daughters), and Dorothy Connor (Mr. Connor’s wife). The state called Mr. Connor’s trial counsel, Eugene Zenobi, and psychologist Bill Mosman, who had testified for Mr. Connor during the penalty phase.
Following the state postconviction evi-dentiary hearing, the postconviction trial court entered a written order denying all of Mr. Connor’s postconviction claims. With respect to Mr. Connor’s penalty phase ineffective assistance of counsel claim, the postconviction court’s order denying relief noted that trial counsel Zenobi testified that he “did not find any significant evidence of [Mr. Connor] being abused as a child.” Additionally, the post-conviction court observed that while trial counsel suspected Mr. Connor might have been abused as a child, trial counsel was reluctant to use child abuse as a defense because: (1) Mr. Connor’s offense involved the death of a child; (2) trial counsel believed it would have been difficult to show a link between Mr. Connor’s offense and his child abuse because Mr. Connor was an older man; (3) trial counsel wanted the jury to concentrate on Mr. Connor’s mental deficiencies and did not want his mental health mitigation diluted with a dangerous issue; and (4) finally, trial counsel was concerned about opening the door to harmful evidence about Mr. Connor’s abuse of his own children. Trial counsel also discussed this strategy with Dr. Mosman, one of Mr. Connor’s mitigation experts. On this record, the state postconviction court concluded:
The failure to present testimony of the Defendant’s abuse as a child was clearly a tactical decision, which was supported by Dr. Mossman [sic]. Counsel was not ineffective for failing to present evidence of alleged child abuse, which was a well reasoned tactical decision.
*615It is clear trial counsel did his job. He hired an investigator.... He had three children and the Defendant’s wife testify. He called mental health experts and correctional officers [to] testify on Defendant’s behalf. Defendant has not met the prejudice prong of Strickland. ...
Mr. Connor appealed the denial of post-conviction relief to the Florida Supreme Court, raising fourteen claims, including his penalty phase ineffective assistance of counsel claim.6 See Connor II, 979 So.2d at 857-58. The Florida Supreme Court unanimously affirmed the denial of Mr. Connor’s motion for postconviction relief. Id. at 870-71. After correctly identifying Strickland v. Washington, 466 U.S. 668, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984), as the governing standard and quoting Strickland’s deficient performance and prejudice prongs, Connor II, 979 So.2d at 858, the Florida Supreme Court concluded that “[t]he record supports a finding of competent and professional performance.” Id. at 865. On this issue, the Florida Supreme Court made findings of fact and reasoned, in part:
Trial counsel specifically considered and rejected the presentation of debatable evidence suggesting that Connor committed the crime because he had been physically abused decades earlier. Counsel undertook a deliberate and reasonable strategy to present positive family life mitigating evidence and mental health mitigating evidence, instead of a strategy that would have included abuse of the defendant and abuse by the defendant. Based on the circumstances of this case, we cannot say that our confidence in this case is undermined because counsel chose not to present evidence that was inconsistent with the evidence that was presented.
Id. at 866.
D. Federal Habeas Corpus Proceedings
Israel Encinosa, still acting as appointed counsel for Mr. Connor, filed Mr. Connor’s first counseled petition for writ of habeas corpus in federal court on November 19, 2007.7 Mr. Encinosa made no assertion *616that Mr. Connor was incompetent, although a month later Mr. Encinosa moved for the appointment of new counsel.8 Mr. Connor, again through Mr. Encinosa, filed a second federal petition on April 14, 2008, four days after the Florida Supreme Court granted the state’s motion for clarification and issued a slightly revised opinion.9 See Connor II, 979 So.2d at 852. As with the original federal petition, Mr. Encinosa again made no assertion that Mr. Connor was incompetent.
The District Court appointed David Mo-lansky to be Mr. Connor’s new federal habeas counsel on April 27, 2009. In June 2009, Mr. Molansky filed a motion for the appointment of a neuropsychologist and a mitigation expert. On July 13, 2009, Mr. Molansky filed a motion to have Mr. Connor evaluated for competency, a *617competency hearing, and for a stay of the proceedings pending a determination of whether Mr. Connor was competent. Mr. Molansky said that he had met with Mr. Connor on December 30, 2008 and that Mr. Connor “was unable to provide any meaningful assistance [to counsel], in litigating the pending petition, or providing assistance to amend the petition.” Mr. Molansky also stated that Mr. Connor “suffers from frontal lobe damage,” among other things, and that counsel had a “good faith belief’ that Mr. Connor “may not be competent to proceed in a § 2254 action” and “may not be competent to be executed.” Mr. Molansky argued in support of his motion that Mr. Connor’s statutory right to counsel in federal habeas proceedings “encompasse[d] ‘meaningful assistance’ which ‘depends in substantial measure on the petitioner’s ability to communicate with [counsel],’” and cited McFarland v. Scott, 512 U.S. 849, 114 S.Ct. 2568, 129 L.Ed.2d 666 (1994) and 21 U.S.C. § 848(q)(4)(B). Beyond that, Mr. Molansky sought funds to determine Mr. Connor’s competence both for the § 2254 proceedings and to be executed.
In response, the state argued that there was no right to be competent to proceed with a federal habeas petition and no basis to recognize such a right here given the status of the case. Specifically, the state took the position that since Mr. Connor’s federal petition had been filed more than a year and a half earlier, the state had filed its response to the petition, Mr. Connor could not amend his petition under Federal Rule of Civil Procedure 15(a)(3), and because the Antiterrorism and Effective Death Penalty Act’s [AEDPA] statute of limitations had expired, Mr. Connor could not add any new claims. The state also argued that Mr. Connor’s competency to be executed claim was not ripe because his execution was not imminent.
After further briefing, on November 6, 2009, the District Court entered an order granting Mr. Connor’s request for a neu-ropsychologist for the purpose of evaluating Mr. Connor’s competency to proceed with the habeas proceeding. The court denied his request for a competency hearing without prejudice, and declined to appoint a mitigation expert. The District Court relied upon its review of the state court proceedings, including the state court’s three determinations that Mr. Con-nor was competent, and three pieces of new information: (1) Dr. Hyman Eisenstein’s representations to Mr. Molansky about Mr. Connor’s frontal lobe damage and mental deficiencies; (2) Mr. Molan-sk/s representations that Mr. Connor was not able to assist with his case and “exhibits sever[e] signs of paranoia”; and (3) letters Mr. Connor had sent to the District Court “that [did] not advance his claims, but [did] exhibit the ‘paranoia’ recognized by” Mr. Molansky.10 Based on this evidence, the District Court concluded Mr. Molansky had not “put forth sufficient evidence to warrant a hearing on competence,” but had “made a sufficient showing that the appointment of a neuropsychologist is reasonably necessary to advance his claim of lack of competence.”
*618In January 2010, Mr. Molansky filed a competency report co-authored by Dr. Eisenstein and Dr. Esther Selevan which concluded that Mr. Connor was “not competent to proceed” and “[i]n all likelihood ... will not be restored to competency” because of “the longstanding chronic nature of his psychiatric illness, atypical dementia and cognitive deterioration.” Additionally, the doctors’ report diagnosed Mr. Connor with “[p]aranoid [schizophrenia, including] prosopagnosia, a denial of mental illness” and stated, among other things, that Mr. Connor: (1) had “fixed psychotic delusions and distortion of reality”; (2) “would not benefit from involuntary hospitalization to ameliorate his psychiatric condition and restore competency”; (3) “demonstrated ongoing decline in cognitive functioning, especially executive functioning, which includes decision making, judgment, reasoning, and abstraction skills” based on a neuropsychological evaluation; and (4) had “profoundly impaired” judgment and reasoning. Dr. Eisenstein and Dr. Selevan recommended “a comprehensive [njeurological work up including neu-rodiagnostic imaging, such as MRI and PET scanning, to delineate the nature of [Mr. Connor’s] cortical and subcortical impairments.”
At a January 11, 2010 status conference, the state objected to Mr. Connor being evaluated further, but requested alternatively that, if the District Court were to order it, the court order “an independent evaluation, not an evaluator for the defense as Dr. Eisenstein has been.” Mr. Molansky agreed. The District Court indicated it would approve funds for further examination, including an MRI, once Mr. Molansky filed his request.
Four days later, Mr. Molansky filed a notice of stipulation stating the parties had agreed to neuropsychologist Tannahill Glen as an examining expert and Mr. Mo-lansky was “in the process of arranging an MRI.”11 Mr. Molansky then renewed his motion for a competency hearing. Notably, Mr. Molansky told the court that Mr. Connor’s “[assistance ... is required to determine the issues he wishes to appeal or whether he may wish to withdraw all further appeals,” and that Mr. Connor “must be competent to make these important decisions.” After Mr. Molansky filed his motion for funds for an expert and for an MRI on January 18, 2010, the State opposed that motion as well as Mr. Molan-sky’s renewed motion for a competency hearing.
On February 11, 2010, Mr. Molansky filed Dr. Glen’s report. Dr. Glen had reviewed Dr. Eisenstein’s and Dr. Selevan’s neuropsychological evaluation of Mr. Con-nor and found it “a valid, reliable and current estimate of Mr. Connor’s capacity from a neuropsychiatric perspective.” Dr. Glen agreed (1) with Drs. Eisenstein’s and Selevan’s conclusions based on the information in their report and (2) that an MRI was needed to determine if Mr. Connor had a progressive condition.
On February 26, 2010, the District Court granted Mr. MolanskyC motion for funds to pay for Dr. Glen’s evaluation and an MRI. On March 25, 2010, Mr. Molan-sky advised the District Court that the MRI could not be performed without a referral from a medical doctor (not a neu-ropsychologist like Dr. Glen). Thus, Mr. Molansky moved for funds to hire a neurologist to provide the MRI referral, sedate Mr. Connor prior to the scan, and interpret the results.
*619On May 18, 2010, the District Court denied Mr. Molansky’s motion for funds for a neurologist to obtain the MRI. The court concluded: (1) Mr. Connor’s federal claims were “materially the same as those filed in state court”; (2) Mr. Connor had been found competent in state court at the time he alleged the claims in state court that were now being re-raised in federal court; and (3) “[b]ecause [Mr. Connor] was competent when making the claims in the first place — when they were presented to the state habeas court — there is no reason for [him] to be competent when presenting the same claims to the federal court.” The District Court did not address Mr. Molansky’s claims that Mr. Con-nor was incompetent even to make the threshold decision about whether to pursue his claims or to withdraw them.
The same day the District Court denied Mr. Molansky’s request for expert funding, it also denied Mr. Connor’s amended habe-as petition in a comprehensive written order without an evidentiary hearing.12 The District Court later granted Mr. Connor a certificate of appealability on the issue of whether the court erred by denying Mr. Connor’s motion for a competency hearing and stay pending determination of competency, as well as the corresponding motion for an additional medical expert. As we’ve already noted, this Court expanded the certificate of appealability to include Mr. Connor’s claim that his counsel was ineffective during the penalty phase of his trial.
II. STANDARDS OF REVIEW
The determination of a legal right to be competent in federal habeas corpus proceedings is question of law that we review de novo. Cf. United States v. Webb, 565 F.3d 789, 793 (11th Cir.2009) (holding the existence of a Sixth Amendment right to appointment of counsel in a motion to reduce sentence under 18 U.S.C. § 3582(c) is a question of law reviewed de novo).
“[T]he decision to grant a stay, like the decision to grant an evidentiary hearing, is ‘generally left to the sound discretion of district courts.’ ” Ryan v. Gonzales, — U.S. -, 133 S.Ct. 696, 708, 184 L.Ed.2d 528 (2013) (quoting Sehriro v. Landrigan, 550 U.S. 465, 473, 127 S.Ct. 1933, 1939, 167 L.Ed.2d 836 (2007)).13 “AEDPA does not deprive dis*620trict courts of .that authority, but it does circumscribe their, discretion.” Rhines v. Weber, 544 U.S. 269, 276, 125 S.Ct. 1528, 1534, 161 L.Ed.2d 440 (2005) (citation omitted). Any stay a District Court grants should be compatible with the goals of AEDPA, including the goal of “re-duc[ing] delays in the execution of state and federal criminal sentences, particularly in capital cases.” Id. (internal quotation marks omitted). Similarly, a District Court’s decision to grant or deny funds for an expert witness is reviewed for abuse of discretion. See Gary v. Hall, 558 F.3d 1229, 1250 (11th Cir.2009).
“When examining a district court’s denial of a § 2254 habeas petition, we review questions of law and mixed questions of law and fact de novo, and findings of fact for clear error.” Grossman v. Mc-Donough, 466 F.3d 1325, 1335 (11th Cir.2006). “An ineffective assistance of counsel claim is a mixed question of law and fact subject to de novo review.” McNair v. Campbell, 416 F.3d 1291, 1297 (11th Cir.2005). But we are “highly deferential” to the state court’s decision on the merits of a claim. See Cullen v. Pinholster, — U.S. -, 131 S.Ct. 1388, 1398, 179 L.Ed.2d 557 (2011); see also Harrington v. Richter, — U.S. -, 131 S.Ct. 770, 786, 178 L.Ed.2d 624 (2011). If a state court has adjudicated the merits of a claim, we may not grant habeas relief unless the state court’s decision “was contrary to, or involved an unreasonable application of, clearly established Federal law, as determined by the Supreme Court of the United States” or “resulted in a decision that was based on an unreasonable determination of the facts in light of the evidence presented in the State court proceeding.” 28 U.S.C. § 2254(d).
A federal court must “presume that a state court finding of competency is correct.” Sanchez-Velasco v. Sec’y, Dep’t of Corr., 287 F.3d 1015, 1030 (11th Cir.2002).
III. DISCUSSION
A. Competency Hearing and Expert in Federal Habeas Proceedings
This Court has never answered the question of whether there is a right to be competent in § 2254 proceedings so that petitioners may assist counsel in making arguments, factually or legally.14 But the *621United States Supreme Court recently addressed this very issue in Ryan v. Gonzales, — U.S. -, 133 S.Ct. 696, 184 L.Ed.2d 528. For the reasons we discuss below, Gonzales compels the conclusion that in light of the procedural posture of Mr. Connor’s case, the District Court did not abuse its discretion when it denied Mr. Connor’s request for a competency hearing; expert funds to investigate his current competency; and a stay of his federal habeas proceedings.
In Gonzales, the Supreme Court granted certiorari to determine whether the “federal statute guaranteeing federal habe-as petitioners on death row the right to federally-funded counsel,” 18 U.S.C. § 3599, and the federal statute governing competency proceedings for federal criminal defendants, 18 U.S.C. § 4241, “provide[ ] a statutory right to competence in federal habeas proceedings.” Id. at 701-02. Gonzales considered two eases from the United States Court of Appeals in which the Ninth and Sixth Circuits had “concluded that death row inmates pursuing federal habeas are entitled to a suspension of proceedings when found incompetent.” Id. at 702; see also id. at 701-02 (citing In re Gonzales, 623 F.3d 1242 (9th Cir.2010) and Carter v. Bradshaw, 644 F.3d 329 (6th Cir.2011)). “The Ninth Circuit located this right in § 3599, while the Sixth Circuit located it in § 4241.” Id. at 702. The Supreme Court held that “[n]either section provides such a right.” Id.
To understand how Gonzales dictates the outcome in Mr. Connor’s case, it is necessary to understand the procedural posture and underlying claims of the two capital federal habeas petitioners, Ernest Valencia Gonzales and Sean Carter,, whose cases were before the Supreme Court. We describe Mr. Gonzales’s case first.
After exhausting his state postconviction remedies in Arizona, Mr. Gonzales filed a § 2254 petition in District Court on November 15, 1999. Id. at 700. “While the petition was pending, Gonzales’ appointed counsel moved to stay the proceedings, contending that Gonzales was no longer capable of rationally communicating with or assisting counsel.” Id. Mr. Gonzales relied on the Ninth Circuit precedent in Rohan v. Woodford, 334 F.3d 803, 813 (9th Cir.2003) (holding that the federal statute guaranteeing state capital prisoners a right to counsel in federal habeas proceedings, 21 U.S.C. § 848(q)(4)(B) (2000 ed.) (now codified at 18 U.S.C. § 3599(a)(2)), could not “be faithfully enforced unless courts ensure that a petitioner is competent”). In Rohan, the Ninth Circuit had concluded that “where an incompetent capital habeas petitioner raises claims that could potentially benefit from his ability to communicate rationally, refusing to stay proceedings pending restoration of competence denies him his statutory right to assistance of counsel, whether or not counsel can identify with precision the information sought.” Rohan, 334 F.3d at 819.
Mr. Gonzales’s District Court relied upon Rohan to “den[y] a stay after concluding that the claims properly before it were record based or resolvable as a matter of law and thus would not benefit from Gonzales’ input.” Gonzales, 133 S.Ct. at 701. “The [district] court found it unnecessary to determine whether Gonzales was incompetent, though it did find that he possessed at least a limited capacity for rational communication.” Id. (quotation marks omitted). Mr. Gonzales then filed “an emergency petition for a writ of man*622damus in the Ninth Circuit.” Id. While his case was pending, the Ninth Circuit decided in another case that “habeas petitioners have a right to competence on appeal, even though appeals are entirely record based.” Id. (citing Nash v. Ryan, 581 F.3d 1048, 1050 (9th Cir.2009)). “Applying Nash and Rohan, the [Ninth Circuit] granted the writ of mandamus, concluding that even though Gonzales’ ‘exhausted claims are record-based or legal in nature, he is entitled to a stay pending a competency determination’ under 18 U.S.C. § 3599.” Id. (quoting In re Gonzales, 623 F.3d at 1244).
After examining the text of § 3599, and considering the doctrinal distinctions between the right to counsel at trial under the Sixth Amendment and the right not be tried if incompetent under the Due Process Clause, the Supreme Court squarely rejected the Ninth Circuit’s holding that the right to counsel in § 3599 created a right to be competent in federal habeas proceedings. Id. at 702-06. The Supreme Court explained:
We are not persuaded by the Ninth Circuit’s assertion that a habeas petitioner’s mental incompetency could “eviscerate the statutory right to counsel” in federal habeas proceedings. Given the backward-looking, record-based nature of most federal habeas proceedings, counsel can generally provide effective representation to a habeas petitioner regardless of the petitioner’s competence. Indeed, where a claim is “adjudicated on the merits in State court proceedings,” 28 U.S.C. § 2254(d) (2006 ed.), counsel should, in most circumstances, be able to identify whether the “adjudication ... resulted in a decision that was contrary to, or involved an unreasonable application of, clearly established Federal law, as determined by the Supreme Court of the United States,” § 2254(d)(1), without any evidence outside the record.
Id. at 704-05.15
Sean Carter’s case was in a different procedural posture than Mr. Gonzales’s. After he exhausted his state court remedies in Ohio, Mr. Carter initiated his federal habeas corpus proceedings on March 19, 2002 in District Court. Id. at 701. “Carter eventually filed a third amended petition, along with a motion requesting a competency determination and a stay of the proceedings,” which the District Court granted. Id. After psychiatric evaluations and a competency hearing, “the District Court found Carter incompetent to assist counsel.” Id. The District Court applied the Ninth Circuit’s Rohan test and determined that “Carter’s assistance was required to develop four of his exhausted claims.” Id. “[T]he court dismissed [Carter’s] habeas petition without prejudice and prospectively tolled the statute of limitations.” Id.
*623The Sixth Circuit came to the same conclusion as the Ninth Circuit but found the statutory right to be competent during § 2254 proceedings to derive from two sources: (1) 18 U.S.C. § 4241 — which establishes procedures for the determination of mental competency to stand trial for federal criminal defendants; and (2) in part from the Supreme Court’s decision in Rees v. Peyton, 384 U.S. 312, 86 S.Ct. 1505, 16 L.Ed.2d 583 (1966) (per curiam). Gonzales, 133 S.Ct. at 701-02 (citing Carter, 644 F.3d at 332). In Rees, the Supreme Court “held indefinitely a petition for certiorari after an incompetent capital inmate sought to withdraw his petition pri- or to [Supreme Court] review.” Id. at 702 n. 1 (citing Rees, 384 U.S. at 313-14, 86 S.Ct. at 1506-07). “By applying section 4241 to habeas actions,” the Sixth Circuit held Rees “defines a statutory right for the petitioner to be competent enough to (1) understand the nature and consequences of the proceedings against him, and (2) assist properly in his defense.” Carter, 644 F.3d at 333. The Sixth Circuit ordered that Carter’s petition be stayed indefinitely “with respect to his ineffective assistance claims and any other claims that ... require his assistance.” Id. at 337; see also Gonzales, 133 S.Ct. at 702.
The Supreme Court also disagreed with the Sixth Circuit’s decision. The Supreme Court explained that its decision in Rees “did not recognize a statutory right to competence in federal habeas proceedings,” and indeed that § 4241 “does not even apply to such proceedings.” Id. at 706; see id. at 705-07.
After deciding that there is no statutory right to be competent in federal habeas proceedings, the Gonzales Court then considered whether a District Court has “equitable power to stay proceedings when they determine that habeas petitioners are mentally incompetent.” Id. at 707; see id. at 707-09. The Supreme Court reaffirmed that “[district courts ... ordinarily have authority to issue stays, where such a stay would be a proper exercise of discretion.” Id. at 708 (alteration in original) (quoting Rhines v. Weber, 544 U.S. 269, 276, 125 S.Ct. 1528, 1534, 161 L.Ed.2d 440 (2005) (citation omitted)). Further, both warden petitioners before the Court in Gonzales agreed that “AEDPA does not deprive district courts of [this] authority.” Id. (alteration in original) (quoting Rhines, 544 U.S. at 276, 125 S.Ct. at 1534). But the Gonzales parties disagreed about the “types of situations in which a stay would be appropriate and about the permissible duration of a competency-based stay.” Id. Significantly, for the purposes of resolving the stays at issue in Mr. Gonzales’s and Mr. Carter’s cases, the Court stated “it [was] unnecessary to determine the precise contours of the district court’s discretion to issue stays,” instead the Court “addressed] only its outer limits.”16 Id.
With respect to Mr. Gonzales, the Supreme Court held that the District Court did not abuse its discretion in denying a stay “because a stay is not generally warranted when a petitioner raises only record-based claims subject to 28 U.S.C. § 2254(d).” Id. The Court emphasized that the “District Court correctly found that all of Gonzales’ properly exhausted claims were record based or resolvable as a matter of law, irrespective of Gonzales’ *624competence.” Id. The Court explained “review of such claims ‘is limited to the record that was before the state court that adjudicated the claim on the merits.’ ” Id. (quoting Pinholster, 131 S.Ct. at 1398). Thus, “any evidence that a petitioner might have would be inadmissible.” Id.
With regard to Mr. Carter, the Supreme Court noted in contrast that the District Court had “concluded that four of Carter’s claims could potentially benefit from Carter’s assistance.” Id. at 708-09. Because “three of these claims were adjudicated on the merits in state postconviction proceedings,” the Supreme Court concluded they were subject to review under § 2254(d). Id. at 709. Like Mr. Gonzales, “[a]ny ex-trarecord evidence that Carter might have concerning these claims would therefore be inadmissible.” Id. Carrying forward the same reasoning, then, the Court concluded these claims did not warrant a stay. Id.
However, the Supreme Court could not determine from the record whether Mr. Carter’s fourth claim alleging ineffective assistance of appellate counsel was exhausted. Id. at 709 & n. 16. But even assuming this “claim was both unexhaust-ed and not procedurally defaulted,” the Court concluded “an indefinite stay would be inappropriate.” Id. This is because “[sjtaying a federal habeas petition frustrates AEDPA’s objective of encouraging finality by allowing a petitioner to delay the resolution of the federal proceedings.” Id. (quoting Rhines, 544 U.S. at 277, 125 S.Ct. at 1534). “Without time limits [on stays], petitioners could frustrate AED-PA’s goal of finality by dragging out indefinitely their federal habeas review.” Id. (alteration in original) (quoting Rhines, 544 U.S. at 277-78, 125 S.Ct. at 1535). Ultimately, because the District Court in Mr. Carter’s case had deferred ruling on procedural default issues, the Supreme Court left the fourth claim for the District Court to resolve on remand. Id. at n. 16. However, the Court constrained the District Court’s discretion on remand in the following way:
If a district court concludes that the petitioner’s claim could substantially benefit from the petitioner’s assistance, the district court should take into account the likelihood that the petitioner will regain competence in the foreseeable future. Where there is no reasonable hope of competence, a stay is inappropriate and merely frustrates the State’s attempts to defend its presumptively valid judgment.
Id. at 709.
In light of the Supreme Court’s decision in Gonzales, we cannot say that the District Court abused its discretion when it denied Mr. Connor’s request for a competency hearing, expert funds, and a stay of the federal proceedings. First, like Mr. Gonzales and Mr. Carter, Mr. Con-nor’s request came long after he filed his federal petition. See id. at 700-01.
Second, like Mr. Gonzales, the District Court in Mr. Connor’s case correctly found that all of Mr. Connor’s properly exhausted federal habeas claims were record based or resolvable as a matter of law, without Mr. Connor’s input. See id. at 708. Based on our independent review of the state court record we conclude that all of Mr. Connor’s fourteen federal habeas claims were indeed exhausted in state court and either adjudicated on the merits, or procedurally defaulted, as evidenced by the Florida Supreme Court’s opinion affirming the denial of postconviction relief. See Connor II, 979 So.2d at 858 n. 1.
We emphasize that Mr. Connor’s habeas petition raises only exhausted record-based claims subject to 28 U.S.C. § 2254(d), and his is not a case involving a claim that is both unexhausted and not *625procedurally defaulted. Further, to the extent that Mr. Connor’s federal claims are procedurally defaulted, he has neither shown cause and prejudice nor a. miscarriage of justice to excuse his default. See Coleman v. Thompson, 501 U.S. 722, 750, 111 S.Ct. 2546, 2565, 115 L.Ed.2d 640 (1991) (“In all cases in which a state prisoner has defaulted his federal claims in state court ... federal habeas review of the claims is barred unless the prisoner can demonstrate cause for the default and actual prejudice ... or demonstrate ... a fundamental miscarriage of justice.”). It is also worth noting that when Mr. Molan-sky attempted to amend Mr. Connor’s federal petition in January 2010 — long after Mr. Connor’s initial petition had been filed on November 19, 2007, and amended on April 14, 2008 — the District Court issued an order denying amendment of the petition under the relation back doctrine, the equitable tolling doctrine, the cause and prejudice doctrine, and the actual innocence doctrine. This being the case, the District Court’s review of Mr. Connor’s claims was limited to the claims and record that were before the state court that adjudicated his claims on the merits. See Gonzales, 133 S.Ct. at 708. “[A]ny evidence that [Mr. Connor] might have would be inadmissible.” Id.
It should be plain from the scope of the issues on which Mr. Connor received a certificate of appealability that we do not decide whether the District Court would have abused its discretion in denying Mr. Connor’s request for a competency hearing, funds for an expert to assist him, or a stay of execution to adjudicate a competency to be executed claim under Ford v. Wainwright, 477 U.S. 399, 410, 106 S.Ct. 2595, 2602, 91 L.Ed.2d 335 (1986) (holding that the Eighth Amendment prohibits a state from executing a prisoner who is insane). While the allegations concerning Mr. Connor’s current competency, long psychiatric history, and deteriorating mental condition may not be relevant to the adjudication of the record-based claims in his petition now before us, these allegations would be relevant to a competency to be executed claim. We express no opinion on whether Mr. Connor would have a viable Ford claim. Mr. Connor’s allegations concerning his competency to be executed are simply not.-now ripe for adjudication because the state has not set an execution date. See Panetti v. Quarterman, 551 U.S. 930, 945-47, 127 S.Ct. 2842, 2853-55, 168 L.Ed.2d 662 (2007).
B. Penalty Phase Ineffective Assistance of Counsel
We now address Mr. Connor’s claim that he was denied the effective assistance of counsel during his penalty phase. The merits of Mr. Connor’s penalty phase ineffective assistance of counsel claim are “squarely governed” by the Supreme Court’s holding in Strickland, 466 U.S. 668, 104 S.Ct. 2052. See Williams v. Taylor, 529 U.S. 362, 390, 120 S.Ct. 1495, 1511, 146 L.Ed.2d 389 (2000). Under Strickland, Mr. Connor must show that “counsel’s performance was deficient” and that “the deficient performance prejudiced the defense.” Strickland, 466 U.S. at 687, 104 S.Ct. at 2064.
Mr. Connor’s claim, as presented originally to the state habeas court, makes three points: (1) penalty phase counsel inadequately examined mental-health expert Dr. Eisenstein when the State asked about Connor’s prior criminal behavior; (2) counsel failed to present a third mental-health expert, Dr. Jacobson; and (3) counsel failed to present as a background witness Connor’s distant cousin, Krincre-cess Connor, who could have bolstered the theory that Connor suffered childhood abuse and whose testimony could have *626been buttressed by other family members not presented by counsel. Connor II, 979 So.2d at 864-65.
As set out above, the Florida Supreme Court correctly identified Strickland as the governing standard and found that counsel’s performance was neither deficient nor prejudicial. See id. at 864-66. Mr. Connor’s ineffective assistance claim regarding Dr. Eisenstein failed because counsel unsuccessfully tried to exclude use of Mr. Connor’s past conduct and, failing that, argued in closing that Mr. Connor had never been convicted as a result of these accusations. Id. at 865. Mr. Con-nor’s federal habeas counsel argues that trial counsel could have better used the accusations to show Connor’s mental instability, but the fact that trial counsel chose a different tack was not deficient performance under Strickland. Id. at 865. Next, trial counsel’s failure to present Dr. Jacobson’s testimony in mitigation was not deficient because that testimony would have simply duplicated the testimony of two other mental health experts. Id. Finally, trial counsel’s decision not to call Krincre-eess Connor and to present, generally, testimony that Mr. Connor suffered childhood abuse and was himself severely abusive toward his own family was an acceptable penalty-phase strategy. Id. at 865-66. That testimony would have contradicted the evidence that was presented, which tended to humanize Connor. Counsel therefore acted reasonably to omit it. Id. at 866.
We have no reason to disturb the Florida Supreme Court’s holding under the AEDPA standard of review. In this case, “[t]he pivotal question is whether the state court’s application of the Strickland standard was unreasonable.” Richter, 131 S.Ct. at 785. Both Strickland and AED-PA prescribe “highly deferential” review. Id. at 788 (quoting Strickland, 466 U.S. at 689, 104 S.Ct. at 2065; Lindh v. Murphy, 521 U.S. 320, 333 n. 7, 117 S.Ct. 2059, 2066 n. 7, 138 L.Ed.2d 481 (1997)) (internal quotation marks omitted). “Where, as here, both apply, our ‘review is doubly so.’ ” Hunt v. Comm’r, Ala. Dep’t of Corr., 666 F.3d 708, 721 (11th Cir.2012) (quoting Richter, 131 S.Ct. at 788) (internal quotation marks omitted).
This Court has said that Strickland does not require penalty-phase counsel to present cumulative evidence in mitigation in order to render effective assistance. See, e.g., Glock v. Moore, 195 F.3d 625, 636 (11th Cir.1999). And presenting mitigation evidence to humanize a defendant, while excluding evidence that would tend to have the opposite effect, may be a reasonable penalty-phase strategy. See, e.g., Bertolotti v. Dugger, 883 F.2d 1503, 1519 (11th Cir.1989). Perhaps most importantly, as the Florida Supreme Court noted, Connor II, 979 So.2d at 865-66, Mr. Connor did not show how the alternate avenues his counsel might have taken would have affected the outcome of the sentencing phase of his case. He therefore failed to present a successful Strickland claim, see 466 U.S. at 694, 104 S.Ct. at 2068 (explaining that the prejudice prong requires the petitioner to establish a “reasonable probability that, but for counsel’s ... errors, the result of the proceeding would have been different”); Schultz v. Wainwright, 701 F.2d 900, 901 (11th Cir.1983) (per curiam) (“To obtain habeas relief based on ineffective assistance of counsel, a petitioner must demonstrate prejudice to himself.”). The Florida Supreme Court’s conclusion in these respects was therefore reasonable under Richter*s doubly deferential standard of review. See Hunt, 666 F.3d at 721 (quoting Richter, 131 S.Ct. at 788). The District Court thus properly rejected Connor’s ineffective assistance claim.
*627rv. CONCLUSION
For these reasons, we conclude the District Court did not abuse its discretion in denying Mr. Connor’s request for a competency hearing, expert funds related to the issue of his competency, and stay pending a determination of his competency to proceed in his federal habeas corpus proceedings. We affirm the District Court’s denial of federal habeas corpus relief.
AFFIRMED.