Hi and welcome to BYC! I agree, I wouldn't have more than 3 chickens in a coop that size. 

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Thanks. I’m rebuilding the coop already so we’ll have larger in another month.Generally a chicken needs 5 sq. feet of space in the coop NOT including roost post and nesting boxes. In the outside run, chickens should have 10 sq. feet of space. Chickens do not act kindly when crowded.
It's already underway and the chicks are in the brooder for now.Hello and welcome to BYC!Glad you joined.
Good luck with your expansion. I'd consider limiting the number of birds to 3 until you have enlarged your setup.