Ok, so I ordered the two part clear-coat and shot the tank again. Seemed to be Dupli-color compatible. I let the tank set for a week before filling it with fuel again. So far no problems.
I also replaced the vinyl seat with the same one in leather and added the matching pillion, so anyone who's interested in the vinyl seat, let me know; it's basically brand new.
I picked up some 120 degree NGK plug boots and some 8.5mm MSD plug wire to clean up the spaghetti mess of wires I had going on up front. Check it out: