Very similar to me.
I'm 14, I'm smart, I've made the $50 dollar robot which would work if I fixed it. However, I did not change the world yet, but I will. Muwhahahha!
I built this robot for fun too and it was a great experience. Learning+fun+burnt hands+maybe a hole in your hand or two+your wallet will hurt but it won't need surgery. LOL I'm kidding, but I did kinda burn my hand with the soldering iron.
Good luck, and we're always here to help you (I will if I can because I'm still relatively new to robotics. But the part I like is the electronics, not the programming which I don't get yet.