Thanks everyone.
The hardest part is where you're actually doing nothing while the paint dries. Then waiting a day or so to wet-sand each application of paint.
The biggest trick, is using a block/rubber pad to wrap the sandpaper around while sanding. I used a 2" x 3" chunk of 1/4" thick ABS plastic as a sanding block to sand the paint with 400, 600grit wetordry paper, and switching to a rubber pad of similar dimension to do the 1000, 1500, and 2000grit sandings. Meguiar's car polish was used for the final rub-out.
Key to success is that every paint product is from the same product line, and that it's all lacquer, not enamel. Enamels just won't dry quickly enough- the process would have taken 3 months, because enamel HAS to completely dry before any polishing or working of the surfaces. Lacs, on the other hand, are pretty much dry when they feel dry.
Now I'm using the blocks and paper to go over the whole truck to remove the faint factory ripples in it, and re-polish the paint out. I'm using the same rattle-can paint sprayed into a jar to do minor chips and such along the way, and it blends beautifully.
Slowly but surely, I'll make the truck's paint look better than the factory job.