How to move out of state when I'm 18, on my own?

I'm 17 and currently going to college. In Decemeber I will turn 18 and get my CNA, but I really want to move to Seattle to go to college because it has always been my dream and I HATE living in Florida. My grant pays for all my tuition and books and even leaves me a small amount of money left over (like $300), my only concern is out of state tution and how I'd have to wait a year before I can become a state resident therefor it would be a year I'd have to take off college and just work. I was looking to have some advice or options? How hard is it to find a roomate? What sort of goverment help can I get in order to get on my feet? Could I get food stamps? Thanks!