Good idea. I would suggest using a gray scotch-brite pad for sanding. Clean it with A LOT of wax and grease remover, and alcohol, then use adhesion promotor and spray paint for plastics.
'94 YJ: 4.0L HO fi, 5-speed AX-15, Daystar 1.25" shackles, 17" JK wheels, lined tub, custom paint, Bestop Supertop, etc..
'88 YJ: 4.2L carb, 5-speed, stock everything. Banana-ish yellow. hard top. 26,XXX original miles.