I would use a pre-cat clear satin lacquer with an HVLP gun. Sherwin Williams or General would work. Be sure to use a sander sealer first. If you can't find it locally you can get it off Amazon. You can probably see it in use on Youtube.
Duracoat Pre-Catalyzed Lacquer Satin 40 Sheen Gal - - AmazonSmile
Duracoat Pre-Catalyzed Lacquer Satin 40 Sheen Gal - - AmazonSmile