Nice orthographic views!
Is it actually to scale?
12' run looks a bit longer than 12' compared to 8' coop size.
What program are you using?
Over all it looks good, there's some devils in the details tho.
Good idea!
I would drop the nests down to coop floor level so roosts can be a bit lower.
Add roosts to your layout.
Vertical nipples, and pipes, won't hold up to your winters, they will freeze. You're going to need a heated waterer.
Your feed tube is blocking pullout tray...but an 8x8 pullout tray is not really viable.
Go with larger roof over hangs, all the way around.
That's all I see for now.
Nice drawings!
Oops, forgot to add this link about heights:
https://www.backyardchickens.com/articles/coop-stack-up-how-high-stuff-works-well.73427/