Men’s voices settle in later and a great many counter tenors don’t have undergrad degrees in vocal performance anyway because of that. As for Musical Theatre, unfortunately, that ship has sailed- the kids who are majoring in that have been doing it since they were in middle school or early high school and are attending colleges that are putting them out there in Showcases to be seen by casting agents in NYC. However, that doesn’t mean that you can’t/shouldn’t take dance classes in school and learn movement so that you look great on stage! It’s fun and you’ll enjoy it, the same as you will with voice lessons. It’s great that your school has classical training as well as pop/jazz, so explore what appeals to you and see where it takes you. It sounds like you’re really into the arts and you’re going to have a lot of fun!