I'd say go with it in pretty much the order you've listed them. The 1st problem is really effing with your head, literally. Second one affects your mobility, w/ or w/o a car. Car problems are a bitch, but not as important as your body. Given your descriptions, I'd say (whether you intended it or not) that you have them in the right order. Not sure how it impacts your wallet, but serious health problems have to trump $$ whenever possible. Good luck whatever you do.
Now, I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor, dumb bastard die for his country.---Patton
There is no room in this country for hyphenated Americanism.---Teddy Roosevelt
I never forget a face, but in your case I'll make an exception.---Groucho
And if you all get killed, I'll piss on your graves.---Shaman Urdnot
How would you like to own a little bit of my foot in your ass.---Red Foreman