Spray the field first with a non selective herbicide. Wait until the stuff dies, cut it back, disk it under, wait for it to green up and spray it again. Do that a few times and you will kill a lot of the weeds that will give you headaches later.
Whitetail Institute has sample packs so you can see what the deer like the best.
https://whitetailinstitute.com/samples-starter-packs/Before planting, get a soil test done and add the proper amounts of fertilizer and lime (if needed) or you will be wasting seeds, the labor and the $$ to plant them.
Here deer don't like brassicas. 12 miles away I can't get them to grow because the deer eat them as fast as they pop up out of the ground, even though the deer aren't supposed to like them until they have had a frost. Cereal Rye, Winter Wheat, etc. are all good here. Even in the ag areas where they grow beans and corn, once those fields are harvested (especially the beans) there isn't much to eat in those fields - that's when the deer will hit your food plots hard.
