OKC in July is always hot and humid. I grew up south of Tulsa.
My bed is going to fold in half the long way. My freightshaker doesn't have enough width for a full length mattress. I plan on using a air mattress. Air it down. Fold it in half on the fixed side of the bed. Throw a strap on it to stop it from sliding down. Then fold the bed up. Most likey will just use a curtain. Making a set of 74" doors of any type in a narrow van isn't worth the pain of the design work.
The link in my sig went to a new owner yesterday. Its down in your region now.