At the end of this season I will be changing getting a new set of strings and cables and will be cranking my poundage to 70 lbs b/c what i got right now aint nothing for me pull back and hold(60 lbs.) and will be getting some new arrows. The arrows I am shooting now are Carbon Force Radial X Weave Pro 300's. My question is what are some other arrows that are close to the gpi that I am shoot now or better yet what are some good lite arrows that have enough spine to be 29 in. and shot from a 70 lbs. bow?