The USDA has a special program to fund the creation of projects exactly like what I propose in The Desolation Manifesto. This includes financing and the down payment to buy the land. The USDA rural development program in particular provides grants for up to 85% of the cost of construction, equipment, materials, etc.
A good place to start is probably this page which covers frequently asked questions for beginning farmers seeking funding from the USDA.
By the way, there is a whole set of special funds available specifically for women and racial and ethnic minorities.