The best thing I did for me personally when shopping, was to go and just sit in a lot of different campers....for literally about five minutes, and tried to imagine myself in there for days at time, like maybe and extended rainy or cold period of time. There were a lot of designs that I said to myself, "I would not want to be in here for an extended stay".
I also looked at mine and knew right away that I was going to change a few things. For instance, I changed out from a 17" TV to a 32"HDTV, and swapped where it is in my trailer. So now I have a comfortable place to have a good, comfy folding chair ( I can sit for hours in it ) and a much bigger television to look at. This was important to me, but to the next person, it may mean little. It sounds like you are well on your way to understanding what features are important to you. Have fun shopping !
