Hi there
Welcome to the best (IMO) for RV/van life website.
This is the place to hook up with experienced and knowledgeable folks.
More than members, its a tribe, many of which are long standing road warriors, but many of us have met others during our travels.
Sounds like you're on track to a wonderful new lifestyle.
I think small/medium class Cs are nice for one, maybe two people, but as a single, I'd also check out some campervans.
It depends on your needs, and around here, you'll get opinions that will help figure out the details of each mode.
I see no reason a person shouldn't get out and learn the ways of the road and enjoy our country's beauty well before retirement. There's many ways to make an honest buck while traveling if you're willing to do about any (within reason) job here and there, such as waitress/bartender, etc. Good skills if you like seasonal tourist areas....then take a travel break to clear your head.
Some work online to help support their travel addiction.
Hope to see you down the road