Micro-Lite trailers make some nice small trailers . I am purchasing one.
The Cargo-Lite Extreme. Made of aluminum.
Barely tall enough for a 6 footer inside but will haul two motorcycles, sleep two and can be had with propane, elec, fridge etc. No toilet though. Mucho room for gear and it gives the option of sleeping in the van
or trailer. (yes you would have to roll out m/c's to sleep in it)
The man will custom configure to a point for you.
None of these travel trailers (ALL travel trailers) will handle out back 4x4 type travel, where they get beat by rough terrain. That is not my intention though. I tend to base camp with power somewhere.
Mine will be like the one on the right. Comes with a lift & bigger tires.
http://www.microlitetrailer.com/