sell the corvair before it deteriorates further.
keep the GF 2 hours away...that's good for both of you. i know you don't believe that.
keep the truck, if it's worth it, keep it clean and usable for when you can drive. if it's only storage with no real on-road future, sell it too.
dump all the other stuff for whatever you can get for it. trade some of it for a good bicycle, that's what i'd do. things are only things...if we have things but no money, well, we may have to rethink past choices, and hopefully learn something in the bargain. if you're not willing to pedal for a couple years for the sense of independence, then there's no advice anyone here can give you that's worth a ****. i'm not being mean-spirited at all, just a pragmatic old guy who's been there. btw-many would consider me way poor right now, but i'm not complaining, and am very grateful.
i just noticed "ontario" so forget my job corps suggestion, maybe you have something similar up there available to look forward to? point is, you're young, but approaching legal adulthood. you need a plan, and long term not just quick fixes.
i'll repeat the "STAY IN SCHOOL no matter what" advice to make sure you heard it