Don't worry about what other people think. Your studio may be known as the best on in town, but they are not accomodating your needs, and I don't think what they're doing is right. You've made friends there, but you can still keep in touch with them afterwards. They will understand why you're doing whats best for you.
I am 19 and just beginning pointe, trust me, don't wait any longer! If you want to advance in ballet technique, then take pointe at the other school and you will excell there, I'm sure.
Good luck!