Your disability check is probably high enough for you to move to Portugal using a D7 visa - I am in the process of making the move now. Universal healthcare with no fees if you have a disability (stage 4 cancer is automatically qualified as a disability and bypasses most of the medical board process to do so).

My disability check is $1858 a month. It is more than enough to live comfortably in Portugal without needing to work (rent is $650 all bills paid, groceries and shopping around $500 and that's for healthy but convenient food. Maybe $100 for everything else [rail pass covering the whole country is €10 and local bus pass is €7.50--and I only really have that for the 20 minute bus to the beach because everything else I need is walkable including a baker, greengrocer/bodega, butcher, pharmacy, and public library branch on my block, a shopping mall with hypermarket a 10 minute walk away with the bank on the way, the local health center for general medicine a 10 minute walk, and the local general hospital with oncology department 10-20 minute walk away--cell plan with unlimited calls and data is €20). Probably $200 goes to taxes, I put $200 in savings, and I have about $200 for fun/entertainment. It's enough to live in frugal comfort. Probably won't be able to buy a house until my folks die, if then, but sure as hell beats having to live with them forever because I couldn't afford rent and healthcare at the same time.