RE: Corn seeds, what to use.
I would agree that if you can't get over 3 acres for your corn plot, you should expect some pretty heavy depredation on the corn coming up. Deer just love the little shoots coming up and will either graze it down to the ground or stunt it enough that you won't get much of a corn crop...I am speaking from experience.
I would recommend that you find some way of getting the acres however as corn is a great fall attractant. It will pull in the does and the bucks are not far behind. Late season muzzleloader is excellent as well as the deer are then putting on the feed bag for winter.
There are some sites on the internet that offer Roundup Ready corn that can be drop shipped right to your door step.
Fencing the deer out until hunting season is an option but is more costly.
Planting later with Roundup Ready soybeans can be very good as well if you have the soils or rainfall to support it. The new tender shoots coming up will really bring the deer in!
Land DR