I see some potential issues with the surface fidelity, though being what it is it's very well done.
The top right is what the light will do on the finished part. The reflections are not running consistent along the bumper from and the transitions into the side struggle to track.
I recreated a section of the upper portion of the bumper from your data to show an example of reflection flow that might be more ideal. I did remove the small blisters you had, as they would be sub-dominant to the main surface and added on the clean simple surface.
Just my 2 cents for what its worth, I want this to turn out amazing.
