Tree planting is my absolute favorite habitat project to work on - it's the one that yields the least results upfront compared to TSI/hinge cutting or NWSG but in the long run I think it'll be amazing habitat. And to plant an oak without a tube or cage in deer country... mind as well just throw the tree in the trash can in my opinion. Get you some tree tubes and good stakes (we use steel t-post, other use PVC or metal conduit) and use some good herbicide for at least the first two years. You'll thank yourself in the long run. We've planted tons and tons of trees/shrubs without cages... I can count on one hand how many survived. See the below results when we used tubes...
We have excellent luck with 5' tubes. They do get rubbed on from time to time which can damage the tube. But nothing you can do about that. It's better than doing nothing. We have only one time seen the deer browse trees with the 5ft tubes - the red oaks grew so fast they were about 3-4ft out of the tubes and hadn't developed a really supportive backbone yet. The top of the tree was bending over and actually hanging at, or below the top of the tube in the mornings when the leaves would get full of dew. The solution, I went around and used some 1/2" PVC pipe and cheap cotton cord and tied the trees up so they'd get some better backbone. After a month or two I could remove the added support and they were great!
Here's a video of me putting a tube back on a 6 yr old ~10ft tall red oak. This red oak grew a Y about 4.5' up and it broke the tube, like they're designed to do. Without the tube, this tree was a beacon for the bucks to come rub on. So I've been working on keeping the tube on the tree the best I can, need to tape it on for just another couple years, then the deer can do what they please with them.
It's amazing how fast those tree do grow! These pics below were from the trees 3rd growing season.
And here they were this past summer - growing season #6. They are well on their way past sapplings and turning into real trees!
This Chinkapin oak actually had acrons this year!