Some complete tosses has pulled out from a junction and hit the side of my rs1800 today

I'm not really clued up on the insurance side of things. Have everything to prove he was at fault

Now I want to keep the car regardless and get it sorted. I have notified the insurance but that's as far as it's gone so far. I really don't want it to go through the insurance as they will probably write it off.

Minimal damage to his car, probably a respray of his bumper would sort it. Mine needs new door and rear quarter.

What's my options? Can I fix it myself? If I don't claim and he does on his will that effect me?

I know I'll have to foot the bill if it doesn't go through the insurance but I'm prepared to do that so that it doesn't get written off

Advice needed before I speak to the insurance

Cheers!