Just might be an unpopular opinion but I would suggest to wait till college is over.
You live your life the way you want to everywhere, and that is awesome! Now if you came across school mates everyday then sure, feel free to switch it over in college. If not.. well.. why risk it? Sure, you want to be yourself and as soon as possible but college isn't forever at most 2 years I think? I really understand this isn't an answer you want to hear.
Thing is, I seen it happen in person. A class-mate of mine made the swap on school. Sure, the teachers supported her, friends backed her up but even people never bothering with her before were suddenly against her. Chances are you become an icon and will be bullied. I do not say you will but there is quite the chance for it too happen. Why risk the torture while you can already be happy out of school and leave it behind as soon as it is over? If it does bug you to not be yourself at school.. just see school as time where it is not about who you are as a person but at how you progress mentally to prepare for the future.
Now I think about it, after my friend I kind of did the same as suggesting. Going to school as a femboy with longer hair, feminine clothes but mostly androgynous. You don't want to attract all attention to yourself while you should be able to focus on your studies.
But those are just my two cents D: