50 should be pretty good. I'm 15 and I pull about 60 but I'm also 6'2, 220 and I've been shooting for a while now, so that makes a big difference. I dont think youll have a problem with 50 punds but its hard to say because everyones different. If it does happen to be too much for you just remember that if you cant hit anything theres no point in drawing the extra weight. Start low and get the fundamentals down, and you will notice the weight rises suprisingly fast.