RE: Is this enough for Mech
you should be fine, Vicki shot the Shockwaves for years and I think she shoot just under 60# and has a shorter drawlength than you. I think she even took a caribou with one, so you should be just fine on deer. If you are worried about penetration and want to still shoot a NAP head, I love the hellrazors or the new Nightmare's. Good Luck!