I would confirm the ccc of the vehicle, both by its door tag and on the scales. I would do that for whatever RV I buy.
Recently I was a bit irritated to discover that the Dynamax Isata 5 had what I consider a very low ccc. I suppose it is ok if one is towing a boat for a weekend trip to the lake, but otherwise I would have to either tow a cargo trailer or a truck with sufficient payload capacity. - either would be a hassle.
So, for me, fitness for purpose needs to include sufficient ccc. For a 3 month trip I want to have upwards of 3,500 ccc available. The weight adds up faster than most people believe it does. The cost to buy a Dynamax Force that will give me the capacity I need is significantly more and I will still need to buy a vehicle to tow. So, now I'm reconsidering my class options within that higher price range.