Hi pnichols,
If you'd like to get a portable solar system, I'd suggest to stop down in So. CA on your way to Quartzite and visit Solar Blvd. That Z-amp portable system is very over-priced.
In fact, if you really want a bargain, buy two modules and mount two hinges and two legs on the edges. That is really what these portable systems are. Since the controller should be mounted as close to the batteries as possible and the amount of current being harvested is not that much, an MC4 10 or 12 ga. wire and an inexpensive controller are the other pieces needed. If the controller is located close to the batteries, short battery cables to connect controller to battery completes the system.