Updates.....
the van walls are made up of reflectix, fiberglass insulation and luan plywood that will eventually be covered with grey indoor/outdoor mold/mildew resistant carpet.
This van will need to sleep 2 adults and 2 children, ages 9 & 12. No plans for a penthouse top, we don't plan on spending our days continuously inside when there is a whole world out there to be explored. A place to sleep and to get out of the conditions. For the adults, dinette/bed combo and for the children, bunk beds.....
the bunk beds measure 24" X 67", plenty enough room for them. On the passenger side will be a closet and on the driver side will be enclosed for the porta-potty. The photo is a mock up so I could get a better eye of things. More updates after dinner.