I think you can only have one or the other of those. Maybe if you spoke nicely to a friendly, local garage/bodyshop they might be able to help you out, and be cheaper because it's not an instrument refinisher you're speaking to. But to do so you'll probably have to do all your own surface prep - sanding through the grades, perhaps applying grain filler if the body is a porous, open type of grain. If they're going to help you at all, they'll expect a surface that's ready to paint.