First off, I would recommend a visit from the state wildlife biologist. It's free. He will come out and survey your property and give you a plan, based on your priorities and budget. Here is the contact list:http://fw.ky.gov/kfwis/viewable/private ... ogists.pdf
Second, before he comes out, you can familiarize yourself with his playbook:http://fw.ky.gov/howto.asp
Those how-to guides, in general, are the sort of things your biologist will be suggesting.
In general, I can suggest a few things that will help. I had my biologist come out. He did a very good job, and everything that he suggested (and I tried) contributed to my success: Things like edge feathering, strip disking, etc. are no-cost or low-cost solutions that REALLY work. Food plots work very well, but they also cost a lot. Selective cutting of the cedar trees (especially hing cutting) in my woods has worked.
Cows will compete with deer to some degree. Cows are grazers-- they eat grass. Deer are browsers, they eat very little grass, and mostly rely on the forbs (weeds). Wherever you can encourage forb growth where the cows can't get to it, you will be improving the habitat for deer.
You are already set up for making a food plot, so you may benefit from this: Make small strips and patches-- run the cultivator to tear up a 1/4 acre here and there and plant it in cover wheat and clover. It's cheap and it works. More small plots work better than big plots.
The best for last: Limit access to your property. That was the single biggest step for me. Once I had restricted hunting on the property to just the persons I chose, deer numbers and quality increased. Deer see you place as a sanctuary. They come and they stay.