we are simmilar (6 and 4 year olds now but started them as babies) My 24 foot bunkhouse is used as a tent on wheels and a washroom. for extending water i bring 1 or 2 culligan style water jugs with a hand pump that fits on the top. workds great on a picnic table outside for washing up, drinking, campfire food prep ect. Another thing to watch is not to draw your battery down below 50%. It may still power your stuff but you will be damaging the battery. I have a 100w solar panel that is on a 20 ish foot cable so i can move it to the sun. it gets me most of a charge during the day. id like to up it to 200w (keep us charged indefinitly with low use) enjoy and have fun. i love these types of posts.
