I spent two weeks in my cargo van a few years ago. I was pretty comfortable with a queen sized mattress sitting on a platform for my bed, there was enough room on the side of the bed for a 12" deep cabinet that extended to the roof, storage room for nearly 20 milk crates under the bed, a 22" flat screen TV + a hard drive full of movies mounted just behind the drivers seat, the passengers seat mounted facing the rear and a fold out table on one of the side doors that I used as a laptop desk. I also had 2 large solar panels on the roof and a few golf cart batteries to hold the power harvested from the sun. They generated more than enough juice to run the TV and surround sound all night as well as charge up the laptops and other electric gadgets. For water I just used 10 gallon jugs. In the mountains I saw -20 degrees but was pretty warm in a good North Face sleeping bag. I had more fun on that van trip than I've had on $10,000 vacations with my family staying in fancy hotels. I also had a cheap motorcycle rack on the back for my KLR 650. I'd definitely get a stronger rack for the motorcycle or take a smaller bike if I did it again.