If you hunt alone, I would set a lower limit on 20 to 30 acres in an area that the neighboring land parcels have good habitat. On this small acreage you will be able to do little as far as deer herd management without the coorporation of your neighbors. Of course you will be able to create foodplots, enhance natural habitat, create bedding areas and create your own little paradise. If you do other hunting on the land, care will need to be taken not to drive deer out of the property if that is a concern to you.

Somewhere there is a magical number of acres that you can own, where the parctices on the neighboring land will not have too much of an effect on the game population on your own land. It varies by wildlife species and their home ranges. Larger the wildlife species' home range, more effect the neighbors will have on that species. Few can afford that magical amount of land when deer is that species. That's why I would buy land in an area where the neigbors have good habitat.

Good luck.