Please help with design

[EstTN]

10x10 coop, 9' floor to ceiling. Limit on chickens ? And how many nesting boxes to chicken ratio ? Thank you for any help provided.

 

[ChickenCanoe]

Up to 25 but the more space per bird the fewer problems you'll have. 3 or 4 chickens per nest.
Crowding requires more frequent cleaning and creates ventilation and stress issues.
Shoot for 1 sq. ft. ventilation per bird.