Tall Guy, you are definitely doing the correct homework. A comfortable bed is very important in any RV. If anyone does the math, majority of time is in bed, then maybe drivers seat. I would also consider a bed that stays made up to be just as important. Beds that require breaking down, require places to store bedding, and storage is always limited. Current model bathrooms take up a huge percentage of square footage, and for most people get very little use.
Maybe you could convince PC to build you a bed with east/west orientation. Lots of length, wouldn't have to stretch frames and still have a slide. Call it the TALL GUY VERSION.
Doug