I'm planning a bucket filling trip much like yours': travel the country for a year or 2 between careers. On this end, the man is retired for life; I'm not nor am I interested in being currently.
You might think that living in NYC I'm used to living in teeny tiny spaces but this would only be partially true. Lived in 1800 sq ft apt (currently) and also a studio with loft bed and 2 children. And I'll never forget the railroad apt either, LOL.
I mention that to point out how I made my choices of what size unit to go with based on MY experiences and current wants. I don't want a pseudo house on the road that I'll spend too much time cleaning w/o a cleaning person; have sticks and bricks to return to when the adventure is over. I want a functioning and livable space that concentrates on the needs of 2 people. The grand can sleep in an adjoining tent if that makes her happiest and when I eat and cook I prefer to do that outdoors in a screen room. I want an RV(and TV) that is as fuel efficient as safely possible. So I've currently narrowed my choices down to a TT and TV suited to hauling OR Class B with a hauled Mini Cooper.
Can't tell you if a class A or TT best fits your needs since you know this better than I. can only pass on the thought process of how I'm making my decisions.
Whatever you opt to do ENJOY it to the nth:!