I understand that its up to my family to decide whether they associate with me or not, but I can't blame them because they are also victims. I blame it on the religion itself, the idea that holds them captive.
I share that thought. But you are in a really tough place. A good counselor would tell you that you need to be yourself, but they don't fully understand Jehovah's Witnesses. Being gay or bi would be a huge thing to hide, if that's what you should choose. I faded from Jehovah's Witnesses for the sake of a few family members, but I don't hide that I don't go to meetings anymore. I do have life choices to hide, but they are pretty minor- things like celebrating birthdays and holidays with non-JW's. And I am free enough to do those things without going through much to "hide" it.
Anyway, please please please continue to plan for college as you said. Things that you know are not wrong, and you know are not disfellowshipping offenses- get your family used to the idea that you are going to do those things when it is important to you. Let things like college be a way to open conversations with your family. Good luck.