RE: Government Habitiat Programs
Here, the EQIP program is probably the biggest and the easiest to qualify for. I don't know what it takes to qualify, but your local NRCS office can tell you that.
Trees and your native tall grasses will have to be in seperate areas. Native tall grasses require full sunlight. Tall grasses, like Indiangrass, Little Bluestem, Big Bluestem, and Switchgrass make great cover for deer. If the area is big enough, doe will almost always prefer to fawn in tall grasses. The fawns can lay down in them, and unless a predator literally steps on them, they can't find them. Also if you have any quail or other ground nesting birds, their nesting success rates will skyrocket in tall grasses.
I wouldn't worry about a food plot. Unless you are just wanting to attract deer, food plots need to be 5 acres or larger to really be effective. Taking 5 acres out for a food plot doesn't leave you with a lot left. If you have cropland in the area, especially wheat, let the farmers do the feeding.