wet sand single stage acrylic urethane

definitely you want to let the paint dry 30 days or so, that lets the paint gas off while the paint is hardening. Go through the different grades of sandpaper while wet sanding and use a lot of water while wet sanding. I would cover sharp edges with masking tape, it does not take to much to burn through paint and especially the edges when buffing out the surface with a electric buffer. Good luck
Correct,and old school common sense....