Hi Wayne, The swing out could work quite well. I have seen quite a few that have done it like that and with the vertical lower part at the back of yours if it was hinged right you could swing them around to be parallel in line with the bench. You have my mind going now

you may be able to use them as lower back doors and have a half hatch coming down to meat them
Are you painting the outside or going with the ACL? I think you know which way I would be going, especially at the cost of the 2440x1220 sheets, you would just about spend that in some decent paint. And look at the time and effort it saves. Do one side yellow and the other blue. you can only see one at a time
I haven't got a plan of the wiring, but I have kept it as simple as possible.
12 volt = One interior light, one galley hatch light, one awning light each side, a fan in the roof vent, stereo and a 12v outlet under the galley bench to run the chiller. All the lights are LED. The 12v wiring all comes down to a fuse box under the galley bench. From there I have 8AWG wires going to the battery in a battery box outside next to the tongue box. DO NOT HAVE YOUR BATTERY INSIDE THE CABIN OR GALLEY.
230 volt = flush shore power connection in outside wall backs in to the galley cabinet there is a RCBO there that feed out to a double outdoor power point (inspector classed this as a wet area)

each side above the bench, and a double power point each side above the foot of the bed. I also have another double point under the bench for the battery charger to keep the 12v charged when we are plugged in to 240v.
I have also got vehicles wired to charge TD while travelling. Stop, tail and indicators are a separate thing again.