Don't know about turbine setup. To me, by the time you have all supplies (sealer, base coat, clear, reducer, harder) you are going to have a lot of money invested. Especially with PPG. I wouldn't mess with the proven methods. But that is just my $.02.
As far as water born paint.... it is different but not harder. The goal of your base coat is just to add color. It will dry flat. Make sure you let it completely dry, but pay attention to your clear time. Orange peal will be less of a problem in the base coat. It drys very flat and flows out well. Metallics do well with less tiger striping. I use a kind of fog coat for the base to even out metallic.
Clear is the same.
Hope that helps.