I mean... He’s got the funds to get a place. With 1500$ he could easily afford a studio or small apartment somewhere. (Wouldn’t leave a lot of money for LEGOs and vidya, but hey! That’s where a job would come in handy.)The only way Chris could get into a group home or mental hospital is if it was legally mandated by the courts. So unless he gets picked up on some petty charge and starts acting funny while in processing (and I'm talking crazy even by his standards) then I think Chris will never be in some kind of involuntary psychiatric care
Chris is probably going to be homeless after Barb dies, although I could see him getting a very low end trailer or ratty apartment if some white knights convince him to do it. He could also be desperate enough to let Sockness back into his life as well.
However, unlike most people who think he'll stay in 14 Branchland right until the cops show up, I think he's a lot more likely to just bolt out of there a few weeks to a few months after Barb dies.
It’s the whole process involved that is the problem. As well as where he’d put his horde.
If Chris had really big brains, he’d take his 1500 monthly tugboat, and move west: Either to a place like Wyoming or Idaho where he could rent/buy an entire house for less than what he’d spend on a one bedroom apartment in Charlottesville. Or to one of the socialist hellholes on the West coast that give extra benefits to speds.
But that’s never happen of course. The chances of Chris leaving VA (or just the Cville area) are about as big as the chances of Chris getting married.