Today I sanded the second application of bondo down to smoothness and decided that I was satisfied with the look of the screen bezel. I wet-sanded the piece and refined all of the edges until I was comfortable.
Upon satisfaction with the smoothness of the seams and edges I started applying the clear plastic primer that I picked up yeasterday. Normally I would gray "colored" primer but I didn't realize that I was purchasing clear primer. It looks like its doing just as good a job though so I am not concerned with it being clear. The bondo brought all the edges and seams together to appear as one unit when it is finally painted and I am using the primer to create a sandable layer which will take care of any imperfections along the way. I didn't have any masking tape so I had to improvise and use clear tape which doesn't seem to make any difference.
There were some areas that I didn't want to have much additional primer on so I masked them off. I will likely pull them when I apply the final 4-5 layers of primer. Yes, I am using many many thin layers of primer so that I can build up all areas and sand them down as I need.
Back to work!!