One thing that happens when you live in a trailer for extended times is that you want to watch TV quite a bit. So having a straight on view of the TV is a big plus. I hate watching a TV side saddle!!! Our little Cardinal has three features that we really like. Two recliners that face directly at the living room TV, a nice computer desk, and a camper king bed 72x80. We snowbird in it.
You should look for a double wide refrig also, if you will be living in it. A separate sleeping area for the kids would be important for more that weekend use. As they get into school, they will need a private area to study and do home work.
Chris