Make your food plots to resemble a figure 8. Put your stand in the middle. That way no deer(buck) can see whats in far end of plot without walking to the middle. Giving you a shot.
Thats a good idea. Also, on 40 acres make at least 2 such sites, maybe 3. Plant some pears, they start producing soon, at the right time and are deer magnets. Keep the brush down around the white oaks and you should have plenty of good hunting for you and your son.