I looks really tidy in the photo's. It's great that you are keeping her clean and tidy, but if it were me, then I wouldn't be throwing money at an older bike. You could save the money that you would spend on a re spray and go for a newer bike in a year or two. If you plan on this being a keeper, then spend the money, but if not I would just carry on looking after her as you are, bank the cash and upgrade in a year or two. Invest in some ACF50 and that will protect all your nuts and bolts. If the paint work really is bothering you then invest in an electric polishing wheel (can't remember what you call them) and get some proper paint cleaner, Polish and wax and that should bring the colour back. Maguire's brand is good.