Which Louis Vuitton should I get?

Hey(: I'm going shopping tomorrow, and am going to get a new LV bag, the leather on the one i have now is looking worn on my handle. I'm getting a monogram multicolor one, and was thinking about getting the Annie GM. It's a little smaller than my old one, (speedy 40). Anyone that has it, does it hold alot? I carry alot of things around with me, haha. I'm 13 btw.