It's happening!
Ripping out all of the existing controls and moving it all to redarc. Everything arrived today, but i'll be out of town this weekend and a wedding the next. Hoping i can start next week during the week assuming the weather and work holds up. I'm going to have my wife document the whole install, but the general bit is the TVMS1240 going near the light switches to control all of the lights and a couple of outputs from them to control my starlink 45a relay and the 40a relay for the heater, the big TVMS1280 going behind where the old fuse panel is at controlling most of the higher amperage loads and providing an interface back to their 2000w inverter, adding the Manager30 as the shore/solar/vehicle charging controller with a new 4gauge set headed to the truck. Also adding a 4th 100w panel to the roof while i'm at it since there's room and it literally just glues down.
If i free up enough room under the bed i also plan to add a 4th 100ah battery. We'll see if there's enough.