we also sold our niagra last summer for the 23ikss. actually traded our pop in....maybe not as good of deal as we could have gotten selling privately but it was within the NADA range so we took it. for me it was worth it for the ease of being done all at that same time.
we were also concerned about not be able to access the frig while closed up but it really is not a big deal. as everyone has mentioned its as easy as pushing the button and 15 seconds later its open. when we go camping i open it on wednesday, turn on the frig, we load the frig and close it friday in a matter of minutes. like you, we are now able to go camping with our 5 kids in one vehicle!
set up is a breeze after having a pop up. we are done with set up in 15 or 20 minutes once backed in. we have more room then we could need, even for a 10 day trip to disney in october. to the point we over packed with tons of things we didnt need!
cant say enough great things about ours....other then i took the cover off sunday and we got snow today!
2011 Nissan Titan, 2013 Nissan armada
2014 rockwood roo 23ikss
2013 nights camping - 13