Hey man, that really sucks, being put in that position. A person your age should never have to make decisions like that.
I read a book once called "Rule of The Bone" and I think you should really check it out. The main character in the book has a very similar ordeal as you.
Anyways, I wish you best of luck with whatever decision you make. Don't ever give up hope, no matter how bad it gets, it'll only get better. Plan out what you are going to do and how you are going to do it and then execute that plan without any distractions. Plan your work and work your Plan. Life is hard and we all have our hardships but you have to make the best of the present.
Keep us posted how the move goes.
Also, talk to your uncle and setup a semi-formal system about rent and utlities. That way he won't be able to skim your paycheck randomly.