I just returned from Alaska. I went alone with a Puma 23FB, approx. 27' and towed it with a Toyota Sequoia. I put 16,000 miles on the Sequoia and about 11,000 on the TT (and about 200 ft in reverse. Preferred the Pull-Throughs.). Averaged about 10 mpg. It was very convenient taking day trips, sightseeing without the TT. (I'm just a couple years younger than you guys.)
I left 5/25 and returned 10/14, 144 days. Used the AC I think 3 nights, the balance nothing or the furnace to take the chill out of the trailer. When I purchased last year, I opted for the larger 30 pound tanks. I think I filled the tanks four times. One night I ran out of propane. I also upgraded the HW heater to a Truma continuous HW heater. It worked very well. Had plenty of HW, except when I ran out of propane.
I had no problem towing or with some pretty windy roads. Twice my Garmin 760RV GPS took me down some very narrow and windy gravel roads about 10' wide. I just took my time and found a spot that I could make a U-turn.
This was my first trip in a TT. Had a great time. The TT was very comfortable. I might have gone a little smaller, but it was my "home" for 144 nights and it gave me room to stretch my legs, etc.
I'm thinking about adding some solar panels for next year so I don't have to always go to campgrounds with full hook-ups.
Just my thoughts. I'm a newbie and hope my comments help.