Casey
Why not a WFO, that way you will not need tanks and wet sprinkler systems,California requirements. I am in San Diego area and I have 2 in process of being built. I have done a lot DD, at first I was going just for mobile trailer but figuring out the cost and being limited where you can go makes more sense to get a truck which will allow you to do events, catering most of all street. You might want to consider instead of going the deck route, just a thought. Let me know how your build is coming. Best to you
Mark