A lot of questions, Where can you access from? What's timber land made up of? Oaks? Huge mature trees?, a lot of young growth?
What's the forest floor look like? Like the bottom 6-8 feet?
With the AG to the south being your main destination food source. I would try to concentrate the deer with a different food source(so their hitting your food source in daylight,(before they head to the big AG at night) (That doesn't mean I wouldn't have beans on the farm) My best hunting has been over beans late in the year.
I have about the same amount of acres as this farm and my Fairgoal is to hold the deer during daylight. It's unrealistic to think I can hold them 100% of the time, but if their on my farm during day light they have a good chance at surviving. How hidden is the big field to the north hidden from the road? If it's wide open I'd screen that thing with a line of pines. Or switchgrass.
If it were mine all those openings would be food.
I enjoy projects like this, with a blank slate.