Yes you have to be careful that a gasoline coach does not have too much of an over hang past the rear axle. What happens is that when you get into cross winds it will wag the tail. My 36'gas coach I used to have did not have much, but the wind really bother me any ways.
Newmar does manufacture quality coaches, but that was a good observation by you before you take the plunge.
2002 Gulf Stream Scenic Cruiser
330 HP Caterpillar 3126-E
3000 Allison Transmission
Neway Freightliner chassis
2017 Buick Envision