Unisolar flexible PV on Interstate Car Hauler

Adding a unisolar 68watt peel-n-stick solar panel to an Interstate 28ft car hauler. Installing a 120vac outside RV plug and inside power outlet so doors can be closed with AC power into the trailer. We've already added LED bulbs from www.dx.com to the interior lights. 20A MPPT cheap solar controller regulating power from the solar panel to the battery.