ORIGINAL: quiksilver
I'd recommend a weight set or maybe a gym membership.
Whem i was 12 my first bow(Martin Compound) was set at 40lbs. I was shooting 125 grain bear broadheads. I also used Satelite Titanstoo, all of these are cut on contact broadheads, not the bullet point stuff! I zinged right on through almost all me deer and bearwithout a problem. Just make sure there good and sharp.