Sounds like a very well thought out plan!
Originally Posted by JakeInVegas
Rear section of bus is separated from the rest of the bus by a pocket door. A narrow walkway will go between eight bunks and terminate at the rear of the bus. There will be four bunks on each side. The rear bottom bunks will be short due to the engine intruding into this space.
This is the one part I'm having trouble with. By my estimate there'll be about 73 inches vertical between the faces of the roof and floor insulation in the middle of the bunk stacks. Split that among 4 bunks and you've got about 18.25 inches each including the mattress and framework. If those comprise a fairly thin 1/2 inch plywood with an inch of foam padding, there's less than 16" left for the people and their bedding. Will your group tolerate that? It may be tricky to get in or out of the top bunk or two. Pity the poor soul who gets the bottom bunk(s) where there's no leg room on account of the engine bay, and can't lie on their back with knees up nor on their side on account of the space being so short.. Do the wheel wells eat into this space too, or will the bunk stack go entirely behind them?
I'm planning a similar bunk concept in mine... but I'm just putting the finishing touches on a 16" roof raise and only going 3 high on the bunks so that they have 21" usable space plus 5" allowance for the pad and frame, plus 10" below for wheel wells and storage.
With that many people sleeping in such a small space you'll want good ventilation to carry away the humidity from their perspiration and breath.