Progress has been slow for the past couple of months due to unforeseen medical issues. However, I have been thinking a lot about the floor plan I devised and never really liked the fact that I didn't have room for a passenger if I ever wanted to take someone out for a short trip or whatever. Yesterday morning I thought for a while and came up with a new plan and I think it will work. I rendered these in SketchUp today.
On the passenger side, the chest fridge is now where the dog beds used to be. The computer desk is moved to the fresh water platform and one of the dog beds will go under that desk with a door or gate that will be closed when driving. I've also fashioned a duct to route cool air from the new air conditioner location to the rest of the cabin. I can control the air circulation by opening or closing registers as necessary.
On the driver side, the wardrobe has been moved from the passenger side and houses another dog bed underneath. The shower (and portable toilet) is off the platform giving me a few more inches of headroom so I can raise the shower head location. The kitchen is now directly behind the driver seat. I think I can add a removable table top in between the two front seats for dining, but only if I can fix the swivel mechanism of the driver seat and find a new passenger seat with a swivel. It would be nice to eat while looking out the big front windshield. (The as-pictured passenger seat is only a placeholder model—there are mounting holes in the floor for the seat that was removed by the previous vehicle owner and I'll attach to those holes any seat I find.
By moving the shower forward, I might be able to route the drain directly through the floor. This wasn't possible with the shower any further to the rear as the fuel tank was under where the drain might exit. Even if I can't go through the floor with the drain, I can still raise the shower pan a few inches to allow for a p-trap and then route the plumbing to wherever it needs to go. The gray water tank will be directly under that part of the floor.
Since the shower enclosure is going to be about 3-feet square, I might use a corner cabinet in the kitchen with a narrow base cabinet to fill the remaining space behind the driver seat. The corner cabinet would allow more storage and I could mount an on-demand propane water heater in the back of the cabinet with a chimney vent up through the corner and to the roof. This solution is still in the planning stage (like a lot of things, hehe).