trailer update:
update, it's got paint. Not my best work, I was in a hurry and distracting my mind from the real world.
I'm not too worried about the inside of the bed, I have a liner, and was planning on the inside of the bed being black anyways. A little bit of new polyurethane caulking around the wheel wells, some grinding away of rust near the tailgate, and all will be good enough for utility use