I kept it simple. Why pay them when you can do it yourself. I just added batwing on one side and 9x9’ awnings on the other, on demand shower, 21 gallon water tank, everything else I’m doing myself. I installed 100ah battery , 3000 watt inverter, battery charger, 150 watt solar panel. The truck has 500ah Lifepo4 you can connect to the trailer 30 gallon water tank that pumps water in or out and the fridge is in the truck too.