I wish I could tell my family

So um I am a trans man (13M), and i have known for a while, but accepted it a few weeks ago.

I really wish I could tell my family, but I can't, because my parents are transphobes(mom only accepts lesbian and gay, she thinks that bisexuals should 'pick a side'), my grandparents are anti lgbtq as a whole, my brother probably knows but he hasn't told my family (which means he doesn't care, which is okay)

I love my family and all, but their transphobia is annoying because even though I want to tell them, I can't because I might get kicked out, or have to change schools (i am gonna have to go to a girls school in september and for some reason i am not bothered much, maybe because i can probably hide it).

I hope I grow up soon, so that I have financial independence before telling my family because I don't want to risk my future.