How big is that other coop?I'm single, and live alone, with 14 pullets already lol, egg production is not a factor! Besides, 2 of the 4 are brown leghorn, which as I understand is a different sort of layer.
Coop space is not the biggest issue. One coop is 4X4, but has an attached run that is 10X4, which I could very, very easily slap some walls and a roof on, install a roost and TADA, more coop. The 2 coops are also very well built, and predator proof already.
But, I don't really need 20 birds! So I don't think I want to keep the leghorns AND get more.
So maybe I missed this.....and/or I am making assumptions.
You are a fairly new member here, so I also assume you are new to owning chickens and might have a bit of a case of chicken fever and the accompanying chicken math.
Have you thought about your housing (coop and run) capacity for the coming winter?
The last thing you want over your first winter is too many birds.
I apologize if I am way off base..but might add a variable to your decision.