Thanks zen, I hadn't considered the maneuverability of the gun.Id use the cans of paint you've already bought if I were you. Are you keeping it white? It looks great in white, more like furniture. The compressor might be awkward on a large cabinet like this, the gun not an maneuverable as a can of paint.
All these huge tanks are making my 38g look so small! And I was only thinking last week how awesome it is lol.