Wow, I can't lift twice my own weight. I don't think such a small frame could support that kind of lifting. I think the more you lift, the more you'll want to gain size. Especially since everyone else will tower over you. I've never seen a twink powerlifter before. LOL.
Good luck! I'm almost certain you'll have a change of heart. Seeing your own growth can become addictive and seductive. Trust me. You'll start to touch yourself.
