Are you planning on eating?
And I mean that in a nice way!
You have lined out a difficult path that includes little reward. I hope you talk to a bunch
of people on ranches (I lived on a working cattle ranch with 2000 head for three years) and be very clear about what you're willing to live like and do. The re-hab life is a good sentimental choice, but also fraught with the 'no money'-itis.
Same with teaching and training (been doing it for over 30 years and it's pretty good now, but...). It's really tough. Not meant as a complete downer, but you asked and it isn't going to be an easy go.