you're so young! I'm in my mid 30's (well ok, that's still young compared to 50s) and you have obvious greater potential to become a very beautiful girl in this lifetime (and beautiful for a longer period of time)
I don't want to sound negative, but with experience and knowing people that don't look at the world as a whole and the ground they stand on that get caught off guard and overwhelmed,
I feel you deserve to be prepared for anything, and it might help checking out some transgender stories. like there was an artist and an lady trucker who lost all or most of their family after coming out, but they still persevered and successfully transitioned and have a roof over their head.
Not to scare you, but keep in mind, that anyone that rejects you for being what you want to be, are the misguided fools in this world.
So whatever happens or direction you take, know that there are ways in life to survive and succeed. Not everyone discriminates, and perhaps you have or may find people that can support you even if you do come out to family/friends are transgender.
if your family really loves and respects you, they will accept you for wanting to be a real beautiful girl outside besides inside.
I know my family don't truly love nor respect me, they only "love"/"respect" a mask, a costume I didn't choose nor want. it took them years to stop nagging about my really long hair, and even then they still don't respect my decisions. so I know they are not on my side and don't deserve to know my true self, because they can't handle it and too closed minded, ignorant and foolish to accept things outside of their strict and misguided principles.
your situation is better than mine. and I feel you are stronger than I am to get what you want in this world.
I'm with my parents, have issues with getting job (I'm more of a maid or delicate princess, so that lifestyle doesn't gel with me, even though it's pretty essential for most to survive in cities), antisocial, insecure, don't like going out, no insurance. at this point I might have to win the lottery to afford to live independently and afford HRT at a consistent basis, as well as FFS and SRS.
and no matter what happens, even in worse case scenarios, as a last resort, at least be open to possibilities beyond this life, I believe in the afterlife and souls that are eternal, invincible and powerful outside of this dimension's physical rules, and we will achieve our desires and needs after this life in a dimension open to true power and perfected and changeable physical rules. So whether we transition or not in the life, we will still achieve our desires and needs in the afterlife and can each establish our personal heaven. we can imagine it, we can achieve it. if you're not religious don't worry about it, I'm not aligned to any particular religion. I am open minded and know that our self awareness, imagination, mind and soul can't die.
there's already lots of hints everywhere that we are more than we seem, and sentient existence goes beyond life and death.
look at the breakthroughs people achieved with their mind in this world, now imagine what we can achieve after leaving this world.
but don't worry about this subject too much, the afterlife will speak for itself, so concentrate on the now.
well although I'm quiet, I'm quite a talker on the inside. so I think I said my motivational part in this discussion.
