Thanks for that info about the balance by moving the cable, thankfully I never have more than a 200watt draw as I don't have an inverter yet, or any big loads other than when the slides come in/out.
I'm building a 48v battery because I want to unplug from the grid completely (eventually). I will probably stay plugged in for the days i have no sun (which in Central California is not very often), or when i draw a large enough load the batteries can't keep up (like all 3 ACs). My electric bill last month was almost $300 so spending some money on solar/inverter/batteries is not a big deal if it cuts my electric usage. Especially because we take this rig out to the desert to go riding quite often, where there is no grid.
Long term, id like to be able to use solar/batteries/inverter to run the fridge and water heater in 120v and reduce my propane usage, while also being able to run atleast 1 AC during the hottest parts of the day. With the amount of solar i am capable of putting on the roof, and battery storage I could have, I don't think its unreasonable. Definitely not easy or cheap, but not unreasonable.