Hi Rob,
I went through much of what you are about 6 months ago. (See "
MGB GT vs. Chevy Avalanch ") IT'S NO FUN! Thank goodness you seem to be okay. I concur with all the others when they tell you not to sign anything for a long, long time - until you're SURE any injuries have been discovered and addressed!
Regarding the car, I have an idea for you. If the insurance company won't fix it or you decide it'll never be right, max out what you can get for it as a total loss. (I got what I paid for the car and every receipt I had.) Then buy it back. To give you an idea, I bought mine back for $500.
I know a guy in Sunland (not far for either of us) who has several B's in his back yard. (He's totally reliable - more detail in a PM if interested.) He lets people put cars there for a nominal monthy fee and he has a few bargans he's picked up on his own.
You could probably put your car there for a little while while you decide what to do. You can buy another car and transfer some or all of parts as desired. At least you would have some time to decide. You could sell it to clear space now but, once you do, it's gone for good. Once you have healed and the rain stops, you can search and decide. You can always sell it a month or two from now if you decide to.
I'd be happy to call him for you to verify his willingness and initiate the contact.
Oh! If you don't want to let them total it, I know of 2 frame guys who will do MG's to spec. Both come recommended but I have not see their work.
Let me know if I can help in any way! Adam