PLEASE HELP

I am an international student. My relatives in Charlotte, NC applied for my green card in 2004. We got our confirmation mail last year and we are supposed to get our PR by April 2017. I want to study computer science. Will I get state benefits later?
My SAT score: (Math-680 Read-640) GPA: about 3.3/4 (Just assuming as I follow GCSE curriculum)
Is UNC Charlotte a good uni for computer science. Can you give me a list of good unis for computer science.
Please help me, as my application deadline is nearly here.