You sound like another perfect candidate for a DP. Like others have said, engine out back, all the heat and noise is out back too.
Air brakes, jake brake and air ride are awesome.
Basement and pass through storage are huge compared to the gasser also. Remember, you have the transmission and driveshaft running the entire length of the coach. DP's don't have this problem, so you get a ton more storage.
If you can afford it, go for it. You won't believe how quiet the ride is even under full throttle climbing hills.