Mike, here is another thought. Deer are basically a bit lazy in somethings -must be learning from humans, but if after you plant, cover the new seedlings with brush. Not enough to smother but, enough to make the deer stick their head in the pile to get to it. If there is food outside the brush pile for the deer to eat, they will most likely not go to the extra trouble to get to the sang. I have seen that work in the wild.
Now the other thing to consider is how many deer are we talking about for the 300 acres? If just a few, probably not a problem but, if there are 25-30 or more, they may eat everything on the place. Look at his woods. If there is not much vegetation below the 4 1/2- 5 foot line, I would not consider planting there as it is way over browsed. If lots of good growth on the forest floor and a nice layered forest look, the deer must be happy with the feeders. Hope this helps.