I think the big question is are you growing and is she still growing? (Midge is adorable!) If you are still growing, I would say to pass on her since you fit her pretty well right now, but if you grow more you won't. And if you're just going to have fun with her, I wouldn't worry about it at all. She's fully capable in carrying you even if you did get a little taller/heavier. However, it may affect her if you do hard work and serious competition.