A popup with a 'real' bathroom can be a challenge. Some may have cassette toilets with a storage area. But then they only have a shower curtain type of enclosure. It was that lack of solid walls that eventually ended me in a 26 foot bunkhouse...lol. (it happens).
The Aliner mentioned are nice, can be towed with just about anything. Which, is what your jeep's capability is, the same as just about any car. The Patriot is built on a car platform, don't expect much from it in the way of towing. (Or off roading or ground clearance).
There is this, but not sure if it'll fit your needs. http://www.eggcamper.com/