My dad owns some land currently north of Jackson (just a little outside the city limits). Its a few miles from the USJ highschool (the land is off of mclelan road -unknown spelling sorry- )
it has a few acres of grass and a few acres of wooded area. I asked my dad today about the land and he said the grass is pretty high currently. In case you have seen the place, it has a line of trees along 2 of the non wooded edges.
I dont know how long he will have the land, but as of now he still owns it.
If this sounds like a good place I'm sure he can write up some kind of official permission if that is needed.