A mentor of mine did this, with $300,000.00 for four years. He bought a plot of land in Wyoming, built and underground cabin, and bought a Backhoe to help himself build it. He lived there for four years before moving on with his life...
One thing people have trouble wrapping their mind around is this: the more "toys" (tractors, machinery, etc.) that require consumables and maintenance, the less self-sufficient you will be. To be honest, even today's Amish are a far cry from true self-sufficiency.