Personally, I wouldn't spend a dime, or much effort until I got a proper soil sample, without question on ground you are unsure of. Easy to just throw out something and also easy to throw out what you don't need/wont utilize.
I also have little doubt you could plow and plant oats/wheat, throw 200# of triple 13 fertilizer per acre and get enough growth to feed deer, but know you can improve your dirt over time by planting certain plants and adding the amendments to the soil that it actually needs. It is also possible to improve the native vegetation to be more productive for wildlife as well, just depends on how "deep" of an approach you want to take with it.
A great, FREE resource is your local AG agent, they will come out and meet you, so have a list of questions written down, they know your county, up on best land practices and have leads on tons of information.
Easiest and quickest way to get a certified soil sample, I will link below, same info you will get from your county AG agent, but faster as you can read this, print of the form you need, follow the instructions for getting the sample and mailing it on the bottom of the form.
Main link: http://soiltesting.tamu.edu/
Bottom of page, you want to click "Submittal forms", You probably want the 1st test (S17, test #6) This will tell you if and how much lime you may need. Scroll down to the bottom of the form and full instructions are on the bottom, you can take the sample and have it ready to mail in 30 minutes or less.
Here is the PDF for the sample.http://soiltesting.tamu.edu/files/soilwebform.pdf