Sounds like a nice unit. But if you are just looking for a dual fuel generator to run your coach and don't need all of the bells and whistles like remote start, led display, etc you can get the same wattage, if not more for 1/2 the price of the Westinghouse.
I purchased the DuraMax portable 12,000 watt dual fuel generator as a back for my house from them and it works great. I know you don't need something that big for your coach. Here's the link. They have other Dual fuel gens for less money that might be a better choice for you.
https://www.maxtool.com/outdoor-powe...uel_type=14564