Im not sure if this is something your worried about or have thought about, I forget who it was i talked to, but they warned me of running the valves directly to the bungs on the tank. They said that the weight of them over time can cause the bungs to break? Not sure if it is true or not never did and research on it after the fact, but when i saw your tank set up like that the light bulb in my head went off in result of remembering this. Maybe someone will chime in with input