Please read my first post in my Catch 22 sticky.

Qualifying for state disability is generally much easier than for SSDI.

If your doc supports you can no longer work, I'd apply for state disability and then probably start a new SSDI application when you were no longer working at all. Do lots of research and do a more thorough job the second time if possible. (The first application does become part of the original record just so you know.)

What you're describing sounds like a borderline case. So long as you can manage even PT you'll likely struggle to be granted SSDI.

You might also want to check out my SHOCKING Individual ALJ Statistics thread, so you can find your judge's approval rate and your other local statistics.