Full paint or not? We bought our CC off the lot. I would not have paid for full paint. That said, we love it. It's beautiful. Question is...how long will it last? I'd hate to have to pay for re-painting.
Residential frig or 4 door? (Kind of like the residential) We will NEVER again have a camper without the residential refer. So much room and it works so much better. However, we do not dry camp. If we did, we would have to have the propane refer.
Thermopane windows (Never had these and have been told will improve inside climate) How can they not help? Just like in your S&B home, it adds a layer of insulation between outside and inside. Besides that, you don't get the moisture build up on the windows. At least we have not, yet. I'm sure if it is cold enough outside, you will still get some. We like our thermopane windows.
Gen Prep (Had this on the HR but never generator) We have the prep, but don't know if we will ever use it. The generators are very pricey and we would only need it for a power outage in a campground. That doesn't seem to happen too often.