Is 120 gallon air tank large enough or should I go bigger? Also what are some good things to put in the trailer? I am planning to build a trailer similar to the Southern Yankee BBQ Shack on a 14' trailer with 9' shack and 5' smoker patio. The health dept already gave me a build sheet of what the expect to see but I would like to know what you guys wish your trailer had and other thing that will make life easier when at a gig?