The van kinda-sorta doubles as a couch at the back, because of the relatively large back bumper. We were talking about getting a cushion w/ outdoor furniture fabric to put on top and make it more comfy.
Re: the charging -- I have plans to put a secondary battery inside to power the van/lighting/charging-needs -- but it's just not quite in the budget yet. After that, we'd be hooking it up to solar power so we don't have to rely on driving to charge the secondary battery.
Glad you're diggin' the van! As an FYI -- we were tossing around some potential ideas of renting it out if people wanted to cruise around the island. Perhaps rentals could be pair for by Steem (or XHST!?)....