But the 650 doesn't HAVE a washroom! It's not really in the same category as something with a bathroom.
Why not do a test? See what an AC weighs (I have no idea), put that much weight on the roof, and crank it. We have an 800, so 6" less roof, and only noticed a slight difficulty increase with 50 lbs on the roof. My 5-year old could still do it.
Also I wouldn't have anything to do with a dealer that misled you like this one. But I tend to hold grudges. :)
DO contact Northstar if you think you might want to work with the 850 you have. They really are helpful and will let you know about your options.
If you do get a new one, seeing as you want more storage, an adult-sized door, and better on-the-road access to the washroom, go for the Liberty (or the Laredo which is pretty much the 850 hardside).
