I get a local custom car painter to do my glass bows. Wooden bows I use tung oil so 'tooth' doesn't matter. For a lacquered finish you should sand to 400 grit and then rub with solvent and a tack cloth.
Trying to build a home made booth is a lot of effort and money if you want to do it properly. I've made a booth in my workshop and wished i'd never bothered! Forget trying to make a spray booth next to a dust making workshop. Been there, done that and wished I hadn't!