Wow, you're not on estrogen already? Kinda jealous... I wish I had curves. Even one curve (well... maybe two... one would be asymmetric and weird). Sorry, getting side-tracked here.
I'm at a similar point -- wtf am I? Like when my mom asked me if I'm "becoming a crossdresser," no mom, crossdressers are a construct of the gender binary. Early on in coming out socially to myself and my wife, I tried to act feminine, whatever the hell that means... anyway... key words: tried to and act. Eff it, I'm me. I've got a baritone voice, I tell inappropriate jokes. Cuss like a sailor. Walk 10mph with my back straight and head held high (except in that one flowy skirt that tangles my legs up at 3mph.) I don't wipe my dipstick off on my pants when I check the oil anymore, though.
So long as I don't think about definitions, I'm happy. When I start looking at myself through a bigoted outsider's eyes, then I come undone. Lessons: 1) Stop thinking about what others think. 2) Do you. If I ever learn to follow those lessons, I'll share the secret, I promise.
I keep wondering "do I really need to be on estrogen to be happy?" and "won't I be happier if I can hide my gender and pass as a cisguy when in enemy territory?" and so on. Oddly, the thought of removing my patch, or not putting the next one on, doesn't present itself in a serious manner.