Wade, will the Tap A Draft force enough CO2 into the Pee? I too looked at the tap A Draft System but shy'd away from it for that unknown. It seems to me that the Tap A Draft will do very well to maintain and dispense an already carbonated beverage however for force carbonation I am unsure if you can get the pressure needed.
I am by know means an expert on this but this is what I would suggest.
5 Gal Ball lock corny keg
ball lock gas in and beverage out fittings with barbed fittings
picnic facuit
5lb CO2 tank
dual gauge regulator
1/4 hose from regulator to keg and from keg to facuit
I'm sure others will have some objections and I would love to hear them for myself.
I have not actually done this yet however am currently gathering the stuff to carb a batch of Pee myself