Welcome Kathlyn! I head out every year with my Elite I and have stayed out traveling for stretches up to 7 months at a time. The 10lb dog and I enjoy the small spaces and, when befriending someone in a Class A motorhome, I'll sometimes tell them that "I have everything in my trailer you do, except the wasted space". (Hahahaaaa) I've also met more than a few full-timers in their sixties and seventies living in small trailers similar to ours. It is certainly doable, but, you may need to figure out how to dispose of a house and all of the accumulated "stuff" that has gathered over time. A life without lotsa "stuff" can be very freeing, mentally. Also, with some Google searches, you can find ways travelers handle their mail and establish a state residence for tax purposes.
It is totally doable. Enjoy the journey . . .