I was right hooked and I ended up with a radial fracture at my right elbow and my left knee had 8 stitches.
My wife and I filled a claim with the motorist's insurance and have been working through things with them. We can always get a lawyer if they start screwing with us but everything has been going well so far.
The bike and all my accessories has been replaced. The medical part is on going.
It is really a call for the OP to make.
In my case, I suppose I could start a lawsuit and drag things out to get some extra cash but I do not see the point.
It sounds like the OP's situation is fairly serious compared to mine. It can't hurt to talk to a lawyer just in case.