Have you been advise what the level of blame is ?
Most accidents are rarely 100% blame . . . but if a criminal case is brought, this will assist greatly for you.
The advise you should be given MUST be all directed from your solicitor. Of which - Are they your choice, or allocated from the insurance company ?
I personally would have to be instructed NOT to work and would do as much as possible to keep my own business going, thus showing you are trying to return to your life.
I'd consider speaking with the DSS and their medical staff, as your going down the disability road, and not being able to work.
Are you able to move solicitors firm ? I know a VERY good company that we use at work and who represented me.( my brother does this line of work, i'll get his work e-mail to you - it may help )
If your trading well again, keep with it, and hire in labour to assist you - if you can. I dont know what minimum wage is, but people are looking for jobs, and there aren't that many out there at the moment.