Well, the price for the watch is always the price that it is worth for you!
Rebuilding is expensive. Try it on a strap. Its superb.
Try polywatch for the acrylic. Its a wonder tool. Clean the bracelet in an ultrasonic cleaner. I'd say do it with the case as well but certainly this watch is probably not water resistant anymore and de-casing is probably to difficult if you have never done it
😉 so best take an earbud, a bit water and minimal soap - and some patience
😎 try to use as little water as possible and no not come too close to the crown to avoid that water gets in the case.
Or give it to a watchmaker for a professional service if its a keeper for you
👍