I don't know anything at all about disability, so I can't respond to that.

But have you looked at work-study options at your school? Some of the jobs available on campus would be a lot lower-stress than most jobs, and they work around your schedule. I had a sweet job where I worked at the psychology computer lab (ha!) and it was a pretty low-key spot. I actually got a lot of coursework done when I was finished with my tasks and if no one needed my help.

It's worth looking into - especially if you already work with your school's diability centre.