I am a 28.5" draw length and 70 lbs. I am either gonna go with 175-200 grains up front. So i can get an FOC close to 15%I did the rip TKOs for my build, finished at 495 gr with 185gr up front. Feel like that will be plenty stout with an IW HIT and collar without giving up much speed. Mine are 250 spine though with a 31 inch draw and 72-73 pounds.