Scott,

If you want to have a good QDM program on your property you really are going to have to get the cooperation of everyone who hunts their. If you can' t get their cooperation and with the harvest restrictions you have it will almost impossible. See if you can get everyone who hunts deer on the propery to get a doe tag and if they don' t want the meat get them to donate it to a hunters for the hungry program. A special kids hunt once a year for Does is another idea.
Maybe you can get one of the State wildlife biologists to come and talk to the people who hunt their and have them explain the benifits of a good QDM program. Its probably going to take some work to get some folks to change their old ways, but if you do your research maybe you can change their minds.
Are you allowed to plow and replant the existing fields? Some food plots would help especially if you have kids that hunt their. Their are plenty of things you can do but it is going to take some work.
I wish I had property that size because with that much acreage you can eally make a difference in the quality of deer you have.