The paint I used was SEM 'Bumper coat'. The can says 48 hours for full curing.
I ended up doing more harm than good tonight with my wet sanding, taking it down to the primer by accident along a part of an edge. So I decided to sand the whole piece until it was smooth, then shoot a wet coat onto it. As I did so, the can of paint, which had been running low, decided to sputter, and splotched the paint job completely. So without enough of that paint to continue, I decided to start over and do things better. So I stripped off the paint down to the plastic and bondo with paint stripper. Im going to re-do my bondo work, and then go with antimatter's suggestion and get matched paint and spray it with either a preval spray gun or an airbrush.