Howdy. New Owner With Questions Not Found in the Manuals.

OP No shore power is different than unreliable power so lets back up. Do you need/want power while you are not there and if so for what like refer on propane or AC, etc.

Are you sure you can't have temporary power after demonolation? You're OK with using gens for 6 years for A/C? Without a very large off grid solar farm and battery setup you won't have A/C except with a gen. Or what you already have may be OK to supplement the gen. Perhaps best to go with what you have and develop a plan when the needs are clear.