Basically, you hit the nail right on the head. We are structuring our FT life the same way. We do have an exit plan, but it will be later in our age. During our travels we'll be looking for that state/town/city/home where we want to complete our retirement.
I agree, debt free is the way to go. We are currently debt free and plan to stay that way. Our plan over the next 2.5yrs is too continue to save and pay cash for the next MH. The money from the sale of the house will be put away for the next one. Once we stop working we DO NOT plan to go back. We've spent 35yrs working for the day when we could stop. Worst case we could Workkamp to save a little bit of money.
Good luck in your next adventure.....
Paul