The LITTLE GUY WORLDWIDE T@B M@X S Teardrop Travel Trailer offers the lite footprint of teardrop camping without sacrificing your own personal toilet and shower. The S offers the traditional U kitchen and sleeping areas with the AC mounted on the wall.
Water tank under frame. This is a really popular pin. Here are some resources on where to get the tank. http://www.plastic-mart.com/category/32/rv-water-waste-holding-tanks http://www.caktanks.com/CAK_Water_Tanks.htm