Just for those that are using Ryan's trailer to dream about your own, ...down in the south that trailer would have issues with the non-insulated roof during humid times. I have known of several hobbyists who purchased a similarly outfitted trailer that was sans any roof insulation, and just the heating and cooling of the roof's sheetmetal causes it to "rain" inside on the car.
I find it interesting about the "rain forest" inside the trailer. Would you install the semi-rigid insulation panels to the roof with adhesive?
Roof & side vents will minimze condensation ....
Jim