I think shooting a 430-475G arrow at 270+fps is a good happy medium especially with thinner arrows like the 4 or 5mm FMJs or Axis. This should allow for use of bigger mechanical broadheads without worry about not getting pass throughs. It’s about the best I can get with a 27 1/2” DL bow anyway although I’d love to see better speeds but without compromising the draw cycle and hold weight. I’ve had bad luck with large 3 blade reapers (whitetail specials) on a 60lb draw bow that wasn’t as fast (think I was barely hitting 260fps). I shoot heavier draw weight now but still stay away for huge 3 blade mechanicals due to potential pass through issues. The G5 deadmeats are the the biggest I’ll go for a compound but typically shoot rage trypans and have had good luck with those. So, in short, I think you need to decide on what broadhead you will shoot and match your arrow to it along with your bow speed
390 Grain Easton Sonic 6.0 Match Grade. Going 310FPS at 72lbs 29 inches. Grim Reaper Whitetail Special. Might be unpopular set up but I’ve had success with it. I love tight pin gaps and a very flat shooting arrow.