get yerself a shaft test kit - carbon, wood, alum, whatever - and field points from 125 to 250 grains. for each spine range, leave one bare shaft at full length, one bare shaft at your draw length (plus appropriate overhang added length) and the same at yer draw length but fletched up. vary the point weights and see how they fly. you may find that different bows like different arrow spines, lengths, mass weights .... the ONLY way to suss all this out is with your testing. it's that subjective.