I decided to ditch the donut since the day I hit the curb, as it rendered the car almost undriveable. I still have it, but it's not in the car anymore. I'm going with a full size spare, I saved one of the steel wheels out of my old set, for such a purpose. However, I am getting rid of the metal cargo shelf in th eback, and replacing it with particleboard that will have a (hopefully) tastefully chosen short pile carpet glued onto it. Underneath the board I will have carpet padding for noise reduction. I plan to mount the spare facing toward the back hatch, at a 60 degree angle or so, to make sure the back seat can still clip in. The OSB will be cut and joined in such a way that it meets up with the bottom of the cargo area interior panels cleanly, to the point of being able to still use christmas tree clips along the bottom lip. I'm trying to decide if I want to make a few storage areas or not....
I pulled the shelf out tonight, I will post pictures tomorrow when it's light outside. Also bought the OSB and may continue to look for carpet samples. If I can't find anything that I really feel comfortable using, I may just go with diamond plate...