I see that you are heading down a path similar to the one I'm on with the floor plan.
I had to change where the captain's chairs went because they would have been right over the fuel tank and I didn't want to have to drop the fuel tank in order to BOLT the pedestals in. I don't know where your fuel tank is but you might run into the same issue.
Like you, I also wanted to keep the driver side escape door usable so I placed the bathroom on the passenger side. You can do it that way, it is workable, but it has complicated the plumbing of the drains and the tank hook ups and valve are on the passenger side. Most campground have the sewer on the driver side which means I have to run the sewer line under the bus. Originally I thought Imight be able to have the tanks on the passenger side and the valves on the driver side but I wasn't able to because of the exhaust and drive shaft. I don't regret laying things out the way I have but on my next bus I'll place the kitchen sink and the bathroom on the driver's side just to simplify things even if I have to sacrifice the door.
Just putting that out there.