Mine has the dog house, that is not really an issue. Except there is engine noise.
But any front engine bus will have a drive shaft and exhaust system running the length of the bus limiting your space underneath.
I think I'm 2/3 done.
What is in: floor, walls, bunks, bottom two kitchen cabinets, counter top, sink, and one burner stove top.
Two van seats in the front, a dinette made out of bus seats, the 32" x 32" shower, and upper left cabinets. rear two stabilizer jacks, and the waste water tank. And a hitch in the back and front, and the front bike rack. And the roof top AC, solar panels, and my old van roof rack on top.
Still to install: upstairs: the composting toilet, upper right cabinets, sofa bed in front, over counter microwave, and closet in the rear, and the bathroom door, and all the wiring. And my wife is planning to make curtains. And new escape hatch.
Still to install underneath: the generator, fresh water tank and fill fitting and front two stabilizer jacks.
I'm working on the microwave install today. I hope to get the upper right cabinets in and the sofa bed in (it's waiting in my van) this weekend too. I might have to mod the sofa at one end for the wheel well. We'll see. If you get down this way, might be worth stopping in and checking it out.