Well, some of the more experienced may say differently, but I do not think you will ever get your money back from a restoration, so I would not do anything with the paint. On the other hand, I think a clean well tuned bike will sell for more, if for no other reason than it looks like the seller thinks it is worth something, and is well worth the labor and and a few bucks doing that. Also it makes you look like a bicycle dealer rather than a junk dealer. Besides tinkering with bikes is fun.