Buying a Prevost is a serious consideration. If you buy the wrong one, you will be in a world of hurt.
There will not be a lot of info here as there is a separate site for Prevost info where the guru's hang out.
On that site, you have to join but it's free.
You will find the best information there and the people who live and breath everything Prevost.
In the description that you listed, two air units are really not enough if you travel to a hot climate. Is it a 40 ft. or 45 ft coach?
I had mine built in 2014 (takes about 7 months to build) and owned it for 6.5 yrs. and about 63,000 miles of driving. I had a four slide unit, 1.5 baths, four 3,500 watt inverters, 3 lithium house batteries, 20K diesel generator, no solar..... it was a beautiful coach.
Prevost's are 'million mile' coaches but most things attached to the engine are not. They NEED maintenance and attention to make it for the long haul. What is nice, is that everything on a Prevost chassis is very robust. The size of everything is bigger....brakes, bags, etc. And, they have real front and rear bumpers and are a true monocoque chassis (stainless steel cage).
What I liked about a Prevost are their service centers. They are designed for Entertainer coaches and Passenger buses, the motto is: 'get that coach back on the road', 'time is money'..... Prevost coach owners get the benefit of that business model.
The service centers carry everything 'chassis' related..... windshields, side glass, engine parts, they can rebuild engines which are easily removed from the rear of the coach. They can perform 3 axle alignments, etc.
Good luck and safe travels,