I am up in Ludington, and due to the sand up here I had to add a Sh*t load of lime and fertilzer. But If I were you I would not plant 70-80 acres of the same food source. I would make your main plot be a hearty annual and then add in a few perinneals. We are planting 5 acres white clover, 5 alfalfa, and then some mixtures of winter greens, beans and corn. Good luck!