Not really an afterthought, but for sure there is more to think about. I think it is Mad Jack that has the tank made of PVC pipe that looks like it would be easy to work around.
It would be nice if when I was at a site that had water that I could hook up and presureize the water system. And using an onboard tank for this might be a little tricky. But I could use a 5 gal box/jug for an external tank if Im hooked to water and just close the drain if using the tank inside?

Way more thought to this than I planed, and havent started on the gas and electrical yet. But if it is done right this time it wont have to be done again later.
Thanks for the thoughts and ideas on this.