Joel you have done a wonderful job starting from a car in terrible condition. My 280SL had been given a rotten restoration many years ago before I got it, where they covered up the rust in the floor and then spent time and money on a great paint job. The good news it that while I had to replace both side rail and the floors on both sides, the rest of the car appears to be in better shape that your project. There are still unknowns when it goes to the media blaster.
Keep up the good work, I like your photos.
Howard
71 280SL 4-speed