I owned a 2010 NT 26LRSS for 3 seasons.
1st off the bathroom is small. Once you step out of the tub you have nowhere to go to dry off.
It's 14-15' to the TV. That's a long ways for a 32" tv.
No pantry and very little storage.
No room to get dresses except at the end of the bed. If you want any privacy with the sliding door shut then the space is pretty tight.
The way the two shirt closets beside the bed are designed it feels like a cave. They stick out too far.
Just some observations from a past owner.
Also JMO but it's too much TT for your Expedition. @30' long and loaded up you'll be close to 7000lbs it'll be a load. Mine came from the factory @ around 6100lbs. I towed it with a 2010 F150 MaxTow 145" WB. I wouldn't want anything less.
Not sure which WB you have. 119" or 131" but both are short for that long of a TT. I also had 3.73 gears. You'll need those too. Any less and the 5.4 will be crying in the hills.