Dec info is a good starting point for deer per acre but that is generalised, i can take 15 + deer off my property every year usually 10 doe the rest buck. but the buck take per square mile(640 acres) is 3.6 in my town there have been years where almost 20% of the entire town dec reported deer take is taken off my place...crazy but it happens . Every property is different and friends up the road a mile or so are lucky to see 5 deer all season. If you have cameras use them, identify as many different deer by your pics as you can. qdma has a section on doing a camera survey as well. My suggestion is still start small 2-5 acres and if need be expand to maybe 10. There are always more deer than you see. My experiance is in non-ag areas you will pull deer a long way. a buck i got 2 years ago that i had 12 pictures of was photo graphed all summer 3 miles away, but chose my property as his area for breeding season as the does are here for food. I doesnt take deep pockets to get planting,ag seed oats,and other grains are not that expensive,clover mixes are the most costly but can last for years and anything you do will be better than nothing!