If you start working with one year of when you claim onset of a disability, for SSDI, you jeopardize your award (even retroactively.) I'm not sure if this applies in your case, but it is a major risk...

If WC does not offer retraining in your state, what about utilizing the Ticket to Work program through SS? (After 12 months post onset...) There are jobs available to you that will provide you with special accommodations not available to the general population. You'll likely be tested through your state Voc Rehab center. They'll send you to their own doctors if needed, to determine what you're realistically capable of.

If you qualified for SSDI, that should mean your disability is so severe it precludes you from work where you'd make more than $1000 per month. Your doc/s must have been supportive of that... Did your doc/s fill out an RFC for you?

WC will use anything from your SS case that's to their advantage against you. Likewise, you should be able to use the fact that SS has determined that you're unable to work above the SGA level, in your favor.