To soon to say. You need to establish "serious injury" as that term is defined in the Insurance Law in order to recover for pain and suffering. Be sure to submit no-fault insurance claims to the carrier for the car you were in within 30 days to get your lost wages and medical bills paid. Consult a personal injury lawyer.
Even at your father's age the cae has significant value (assuming good liability) - five to six figures -but I doubt you will get it from an insurance carrier pre-suit. They will offer you minimal money and string you along and hope your father dies before his testimony is preserved. You should consider hiring a lawyer who may want to put the case into suit ASAP so your father can be deposed and his testimony preserved. Without his testimony you may not have a case.
The lawyer will go over each area that needs to be addressed in the will and then draft it. The lawyer needs basic information from the client such as how the client wants assets distibruted, who the Executor(s) will be, who will raise the kids if there are kids, etc.
You don't give enough facts to assess your situation. Spend the money to consult a different lawyer in your area if you want a second opinion as you have a serious decision to make. Trying to do it on-line is a mistake as there is no back and forth conversation and important details will not come out.