I peeked at the later videos.
On the subject of
x people times
y days times
z gallons of water and propane see posts by slowmover.
When are you going to apply a thin layer of aerodynamics over the work you've shown so far? I ask because you haven't addressed the two biggest opportunities with a class-A body — the vertical edges abaft the cab doors, and plan taper abaft the rear axle centerline.
After that your opportunity lies in radiusing the longitudinal edges.
Where did the 375lb of steel go? Under the floor or into a roll cage? I look forward to seeing how you get from luan plywood to passenger safety.