Welcome to the forum, Scott.
Do you plan to go it alone or with someone? What is your camping experience?
Do you plan to tow with a vehicle you already have? If so, pull the owners manual and find what the tow rating and the maximum tongue weight
A large part of the question is what do you need and what can you do without; this being in regard to day to day living. Some require more, and some require less.
I think your best information here will come from those who full time. You may not want to live in the trailer full time, but you are talking about an extended trip.
Good luck with the search. The adventure begins here.