Really, with acreage that size, I would consider doe harvesting a "bonus." If you want the opportunity to kill more deer, have at it. And depending on current deer density in relation to habitat quality, it's always a good thing to "do your part" in holding down large deer populations. But if the deer population shows no signs of over-population, killing does isn't absolutely necessary. Your neighbors might be shooting enough does to hold the population in check. Besides, what you kill on your 400 acres alone won't have much impact on the local population. It is what everybody in the local area combined harvests that produces the impact. Basically, what is harvested on the surrounding 8-10 square miles.