I have been following along as well. I think most RRs that I have read say that 40.00 per day is a good to plan for while on the road. This includes fuel, food and also lodging. Totaling this up, to live on about $15,000 year round sounds like a pretty good deal. Dont know if it is realistic. Have to consider other things like medical care, etc, for additional costs.
Does your budget allow for staying put for an extended period of time? Dont have to go back to work, do you? While it is winter here, I assume your time there is seasonless. Sounds to me like staying there is a wonderful idea.