Blue Skies I think they call that Do It Yourself Incorporated.
With a 8' ceiling and roof top AC's you are going to be hovering real close to the 13' 6" max height.
Being the devils advocate. Is there even a market for this thing? If your selling on the concept of a 25 year rig, what rich guy is going to keep a rig for more than a few years before he dumps it for the newest technology. So why am I spending $600,000 extra? Who is going to buy it as a used rig (no resale market) so your going to end up taking a 1/2 million dollar plus bath.
Once you get to this price guys are going to a million dollar Prevost with a driver who places the rig where he wants its. And the crew follows with the big rig and trailer full of toys. And the owner flys in by chopper.
Bill