How far are your beer lines to the faucet going to be? Mine are 10’ right now. I have the beer line traced with 50’ looped tubing that circulates glycol from a 5 gallon bucket in the freezer all the way to the faucet and back. This works ok, but I still get a good amount of foam, especially on the first glass poured.
In my last setup I had this issue. I made sure that I designed this one better so as to eliminate all of the foam and not waste so much beer. The lines run from the kegs along the inside wall of the cooler and the faucets will be mounted directly to that wall eliminating virtually any warmth on the lines. You can make out the 4 small faucets in the first picture above and they are right above the kegs.