No particular advice, except that when my 535 got rear ended a year ago the "reputable" insurance company did all it could to jerk me around. Get everything in writing. Do not believe anything anyone tells you verbally. Do not trust them to "do the right thing", as they will as surely try to screw you over as the sun will rise tomorrow. Do not trust their adjuster to do a "desk" adjustment. They will look up the price of used parts and cut you a check based on that, whether you can actually use the used parts or not, and whether they are actually cost-effective (because of reconditioning) to use, and whether these used parts are actually available.

Expect to be screwed and prepare for the worst.