Acid dip experience???

The "buckets are more commonly reffered to as bezels.
In answer to your acid-dipping question--first, realize it'll remove EVERYTHING so I wouldn't put the frame connectors or anything in the car 'til after it's dipped. Second, finding a place that has a facility to do a whole car is going to be a chore--most shops don't have a tank that big. You'll also find neutralizing the stuff isn't going to be perfect. There are instances where some of the factory S/S cars had parts years later that were simply too corroded to still use & their restorers resorted to new parts. If it were me, I'd use 'glass where possible and perhaps look for a place that can do your doors & decklid & leave it at that.