Need layout feedback and advice on tree/shrub spacing

Clearer image on imgur

Disclaimer: I have no landscape and minimal planting experience. I've gotten most information predominantly from Prairie Moon's website, which was very useful.
Software used: LibreCAD (probably not the most optimal for this sort of thing… it is tedious)

I made a few posts before asking questions and now I'm finally getting to the point where i'm creating a 'masterplan'. i.e. what plants to choose and where they should be located. I created a to-scale CAD layout of the property.

Image 1: Draft for new yard layout. Legend matched by color.
Image 2: This is the layout as how it is now. I did drone photogrammetry over the summer and pieced together an image of the property. I then imported that image into LibreCAD and drew polylines for the structure and circles for the canopies of trees. Most of the yard is grass. Note that the upper right tree is dying due to emerald ash borer (EAB) and will be cutdown in spring. For reference, the maple in the center has a diameter of 60ft.

When I thought to myself "what plants should I choose?" I answered "may as well do them all". I picture the region near the house as a woodland area, the middle as mostly small trees or shrubs, and the lower region as a wildflower meadow. For my sanity, I didn't depict any individual flower layouts (also because I haven't created any yet).

These placements are by no means concrete… especially the shrubs, of which I got tired of placing circles so just put them in blobs mostly. I know each plant has unique 'ideal' spacing requirements and for the shrubs I will probably mostly play it visually.

I want to most importantly get feedback on the large and small tree layout. Both on selection and spacing. The wildflower meadow won't be started until fall 2026 and tree planting will happen this upcoming spring.

1. Does the selection of large and small trees look good? Anything I should modify or consider here? Here's the list:

– bitternut hickory
– black cherry
– butternut
– red oak
– white oak
– bur oak
– hackberry
– elm
– basswood
– ironwood
– bladdernut
– cockspur hawthorne
– american plum
– serviceberry
– pagoda dogwood
– speckled alder
– pussy willow
– nannyberry
– witch hazel

2) I'm not sure how far I should space them 'properly'. But, in my mind, a forest is usually very dense so I don't see too much harm putting things close. I chose this for spacing:

Large trees (neon green): circles have 20ft diameter
Small trees (yellow): circles have 10ft diameter

Assuming a large tree is planted in the center of it's respective circle, then it would be 20ft from the nearby tree. For small-to-small, it'd be 10ft. Does this seem about right or should it be closer/further?

3) It's my understanding that each respective tree type should be planted next to each-other in clusters as they 'cooperate' with each-other. How necessary is this and is this true for small trees and shrubs or mainly species-dependent? Is there benefit to having them scattered?

4) Any advice on shrub placement?