Keith,
I cannot stress enough how important it is that you continue the steps you are taking now.
I was hit from the rear 5/10/01, this impact made my trunk disappear, and blew out the rear window, the drivers seat broke and I ended up in a reclined position. I now have a buldged disc C6/7 and was experiencing random numbness in my arm and hand. It appears that the aggressive physical therapy is working though, hopefully no surgery in the future.
Enough of that, sign nothing, and agree to nothing that doesn't go through your lawyer. Be realistic but FIRM when settling for your car, and take your time on settling for your injury, oonce you settle you cannot go back for more.
And good luck with your injuries, hopefully you are still able to work.
Take care of yourself,
Dave