You would be surprised at how far 8 ounces of paint will go. You will reduce it with reducer so you may end up using 2.5 ounces of paint to get 4 ounces in the pot. Now if the paint needs a catalyst, watch what you use as a respirator.

I have used a lot of the automotive paints. They work great but are not cheap. They are a two part mix and good for 50% nitro after a clear coat.

Practice with your gun with Testors cans from the hobby shop or the enamel cans from the depot. I have 6 HVLP guns and love them. Use low pressure and the paint goes so much farther without the over spray.

Buzz.