Hi Breeze, I have a 31L as well. Having read all of the options why are you not looking to mount the new inverter under the bed. All of the wiring you need to modify is already there. Shore power, generator, power convertor and battery cables? Should be easy to disconnect the original wires from the existing convertor and "insert" the new inverter. The battery cables run mostly exposed under the frame from the bed area to the batteries under the entrance steps. You may need to increase their depending on the inverters amp requirements. As for the future solar, use the spot above the water tank for all of the solar breakers, shunts and charge controller. This will give you a short wire run from the charge controller to the batteries. If you have a remote monitor for the charge controller and\or the inverter, they would be easy to mount to the side of the cabinets when you come in the door for accessibility
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