Another good read on habitat work and property layout is by Jeff Sturgis....the link below is to his website. His "Success by design" book series (I have all 3) could be of interest to you...specifically the one on food plots (food plot success by design) and property layout (Whitetail success by design). Steve Bartylla is also another great resource as well for plots and property layout.
https://www.whitetailhabitatsolutions.com/
You mention Maple and Beech.....both are shade tolerant trees that can produce very dense canopies and stunt the understory. The Beech will provide some hard mast, but the maple is worthless to deer once it exceeds their reach. A chainsaw may become a very good friend to you. Logging produces cover, food and INCOME! As much as I feared cutting and even early on struggled with the concept of cutting trees to create cover.....it was the best thing I have done thus far. I don;t know how logging would affect your bear and grouse aspects, but i would bet it would certainly help the deer. Beech can help provide cover when they are young as they will hold their leaves well into the winter. Once the trees get large I either hinge cut them or remove them entirely n favor of better mast producing trees. You can also release and improve those oaks as well......typically sunlight and a reduction of competition will help oak grow faster and produce better as well. IF you have cedar make sure that any apples you plant are very resistant to apple rust as cedar can carry it and damage your trees and fruit and just add to frustration.
Learn the property before you get ahead of yourself and have a true plan. Not just a plan for next year, but a plan for what the place will look like in 5 or 10 years. Learning the property is the key. Bedding areas, travel routes, how the wind flows and how your place fits into the area around you are all thing you really can;t change much. Working WITH mother nature and what she gives you may not be picture perfect, but it's a lot easier. Also consider perimeter trails for access.....planning hunting access in advance and not as an after thought can make a huge difference. You find a way to hold the does, you will have a chance at holding bucks or at least give them reason to come check your place out and spend some time there.
The picture of that deer yard is pretty awesome. I'm not sure it's good for that habitat but it is what it is. All those mouths in one place....I bet the browse in that area get destroyed!