I'd say your best bet is to change the tires and cables but don't clean up the chrome.Let the buyer deal with that.Everybody has a different way of dealng with rust on chrome.If you don't know for sure, you might do more harm than good.The handlebars seem to be off of a Sears Screamer(from around the same vintage).Now, while they look cool, it would be worth more with the originals on it.It also appears as if the pedals have been changed(pretty sure they didn't come with toe-clips).Nice bike.