Go outside the insurance, see his dad and check out this other work. Ask how he will repair it and look for tell tell signs of doing it on the cheap. If he sounds like he will do a good job book it in! I have just gone through the same thing but less damage. I found even though a claim applied on the insurance that wasn't your fault still raises it the following year on your own policy. Just adds another statistic.
Only risk is if you late decide to go through the insurance and that car is repaired but a lower standard you won't be able to do much.