If I were to get into any accident, I would try to get down the insurance details of the other party. That way, if it was not my fault, I would be able to make a claim against the other guy. In your case, since that motorcyle guy said that it was his fault, if you file a claim against him, you can get either your car fix or you can get the cash option.

Anyways, to fix that, I would get a whole new bumper instead of using bondo and paint. Is that a hole I see in yours? Now would be a good time to consider getting a body kit.