I own a Gitane, built in the '70's. It needs work...badly. Been riding it all along but this past summer it died. Is it worth the refurb? Here is an idea of what it needs all of these parts are original, It needs..1 new wheel (should I replace both?), front chain ring (bent, been living with it), cogset (if I replace the original rear wheel w/newer wheel), maybe new derailleur (depending on replacement of rear wheel), handlebar wrap.