Moving batteries inside on a 2020 Revel

[3pisme]

I purchased a 2019/2020 Revel from my sister who had recently upgraded the house batteries to three Expion lithiums. It's an awesome setup, but I want to move the batteries out from underneath the Sprinter into the interior. It'll be easy enough to disconnect and move the batteries, but how about the wiring reconfiguration? Solar charging, chassis alternator recharging, fuses, disconnects, etc. Where do I start with finding someone to take this on?