Over the years I've met a lot of NY escapees. I live where Ohio, West Virginia, and Kentucky come together and it is a large University district with numerous types of schools. Many kids from NY come here to go to school as it is MUCH cheaper than NY. They love this area but are a bit saddened for the people here having to live in poverty. (Appalachia) But in time they are in wonder at how they have so many skills to cope with it. (what I call Arts of the Poor) But before they go back to NY after school....they laugh and say....."ya know, Appalachia is an amazing place to visit.....but I don't think I could live there"
But as to your getting prepared, there are some states which may be a little better to purchase an RV of any type in as it may be lower in cost with lower miles. In the mid-Atlantic states for instance a lot of people have RV's but don't use them that much and finally decide to sell them. (when their
kids get towards dating age as an example) Around the Great Lakes region may be another good place to look too.
As for researching, there are two links below that may interest you. The bottom one in particular. It is a portal of handy info to know about in getting ready to be out on the road and living out of an RV full time.
Good luck and all the best.
Ps, Some of the NY kids (guys & girls) I met here took me to NYC during the holidays to show me the sites there. They were some fine people.
And what I saw of NY State was impressive.