As far as bushings it depends on your application: cruising ,pro tour ,drag racing? Poly will give a firmer ride ( I've heard rigid) I like the feel of my car and am replacing with rubber. If the lines are in good shape, no shale or corrosion , re-use. I am mine. I've used Mothers mag polish in the past to clean them up. Just a suggestion. Paint....I have beat this around for 20 years, even to bother repainting at all. IMO if it's a numbers car ( engine, trans, driveline) return her the way she was born. I think a color change might devalue ,but I agree to the point of a re spray. Not saying that someone just might love the color you picked and will pay. I must admit there probably is a reason you don't see a lot of ash gold Camaros. But years ago I was running at Super Chevy and this guy came down to the pits asking me the color, he loved it, different. Gave him the code ,sent him away happy.