Wow, that's a tall order. Our new 25 ft FC works great for us, but it's a vacation trailer as we use it selectively. We have rear twin beds, full awning package and importantly this model has a lot of outside storage & two hanging closets inside. Our truck bed halls the generator, camp chairs & a small amount of misc items.
I could not imagine full timing in this Airstream although some do. Personally, I would get at least a 30 ft for that, although the 28ft is very nice also. My 2 cents.
2016 FC 25RTB
2016 Nissan Titan XD Cummins Diesel