Hey! Looks like you're having a good time! I hope to be a full timer some day down the road. Have you ever thought about installing some water tanks on your bus? Check out Jake Von-Slatt's website at
http://www.vonslatt.com. Check out his plumbing section. He bought some huge tanks from
http://www.plastic-mart.com. They are out in California. I called them to see how much shipping would be to my house here in Oklahoma. HUNDREDS of dollars! However, they told me that they just opened up a new store in Texas. I can't remember the name of the town, but it's between Ft. Worth and Austin somewhere. He said that they are still getting things up and running, but that in a couple months, they'll be making tanks! I'm going to wait until they do and then I'm going to drive down there and get two of these 95 gallon tanks:
http://www.plastic-mart.com/class.php?item=1291
They are $169 each. I'll use one for fresh water and one for black/gray water. These should fit under just about any bus with room to spare. They will put whatever fittings you want on the tank and do it to your specifications. 95 gallons could last two people for quite a while. I know my wife and I could go two days on 35 gallons in our old travel trailer. Anyways, just a suggestion! I'd hate to be having to run to the bathroom every time I have to drop a deuce.
It will be getting cold soon. Running to the bathroom to shower and poop won't be so easy then!