RE: Heavier arrows
Back in my tourny days my outdoor rig was all about speed. My Bowhunting rig (heavy arrow)is always penetration for me & I have never worried about how fast.
I know I have had complete penetration (60# Compound) on 1000# Buffalo @ 40+ yards, Elk @ 30, & many Deer & Black Bears naming some of the larger animals.
29", 2216 Easton tipped with a 125 gr. 3 blade Rocky Mountain head.
Good luck.