Jim,
Where I took it down to bare steel were the areas that I welded. Some parts were taken down to copper. I don't blame you for wanting to strip it down thoroughly, especially after doing as much extensive work on it as you did. I also used some All-Metal to fill pock marks and where I welded the bumper bolts to the rear bumper.
That is exactly what I will be doing, using the Evercoat Metal-to-Metal, similar to the USC All metal.