I have a 2017 Mercedes Sprinter Crew Van, Turbo-Diesel 6 cylinder, high roof, 4 wd. The extra seat is removed for trips like this but the design is a cargo van with an extra row-seat for a carpet cleaning crew or something like that.
It is a terrific vehicle and I have kept it pretty much stock as I didn't want to give up any flexibility to carry things or when camping. I have a rack on the back that will carry two fat-tire ebikes and two kayaks. Inside I set it up with a cot, with clothing bins beneath, a water jug with a small pump on top, an equipment bin with cooking equipment, a port-a-potty, cooler, magnetic window coverings for privacy, and other minor niceties including a factory dual battery arrangement that allows me to keep my electronics charged without drawing down my starting battery.
Fortunately, I also have a very warm Cabelas Alaska Guide sleeping bag that kept me warm during the 10 degree night as I headed down to the coast. Here are some pictures. You can see one Shakespeare rod hanging along the wall at the top left of the interior picture.