rachmaninoff_forever, I just wanted to show you my support; After all, I had your same challenge when I was in highschool, and it ended up becoming a strength, made me an artist of more variety. I always had to "hustle" it seems to find a way to practice, and in the mean time, I met different types of people. (ie, at one point I was borrowing a piano that belonged to a jazz teacher, and he actually showed me some things in several few minute lessons, that have stuck with me forever).
Learning how to play on any piano and making adjustments is so key, and does wonders for your confidence.
There are always people giving away free pianos, because of the hassles of moving them. If you can scrape up the money for a mover, and your parents have the space, that should solve your problem, right? You can practice to your hearts content, keyboard at night, and piano during the waking hours.
Good luck to you.