Should Stony Brook give op a dependency override (which would not be a stretch given his/her situation), op will keep NYS residency. as long as he stays at stony brook. Getting in-state residency at another SUNY or CUNY would be on a case by case basis and would be a little more challenging
As stated if OP has a 0 EFC, s/he would get full tap/full pell (or excelsior scholarship if tap and pell does not cover tuition) and loans. Op may need to work summers/on campus to fill the the gap. Op would probably also be eligible for the additional 4k in loans.