I made a rough kitchenette area. My plan was to make something simple, see how I liked it, then make the final version. It works fine. I don't think I need to change anything. The top will become a butcher block wood.
For the plumbing, I used this as my guide but tweaking it to fit my needs (
https://faroutride.com/water-system/).
I decided to use quick disconnect jugs instead of a water tank to make cleaning easier. So far I'm happy with it but I don't have an outside shower yet. I doubt I'll go to a tank