I have built and already completed a changing table for our baby room. For the finish on this I used an oil based varnish. It worked well. I just completed the crib and I am ready to put the finish coats on it, but I am thinking of getting cans of spray lacquer. All the slats will be a pain to brush on. For the changing table I did two coats on the piece and three for the top. How many coats of lacquer would I need to spray on?