Chipping in my 2 cents-- I'd recommend that
if you do get a pre-made coop that you buy chickens separately.
The coop builders do not necessarily have much incentive to deliver chickens that are of good quality or reliably healthy. They are primarily contracted to build a
good coop, and then just deliver a
certain number of chickens.
The builders would likely assure you that they will give you "good" chickens, too, but
a number of talented chicken coop builders do not know very much about chickens themselves (even though they might have owned a few in recent years), & can't really tell much about the quality, temperament or health of the birds. I have seen behind-the-scenes with some of the package deals, and some of the chickens sold with them were birds of questionable quality that the builders had been able to pick up for free/cheap from someone and were turning around & selling with the coop. Some were also sick or exposed to contagious illness just before sale.
I would buy chickens directly from an owner. Then you get a wider selection of birds to choose from & can see them before you buy them (I'm guessing the coop builders would deliver to you the particular chickens they have chosen after you have already paid for them, sight unseen.) Also, you can get info from the owner about the specific individual birds you are buying, and look around to see if the owner seems to be keeping the chickens somewhere reasonably sanitary and if the birds seem free of disease.
That said, I'm sure that some quality chickens with good temperaments & in good health are many times sold through some package deals.
its not that we have tons of mice or anything but i do see them once and a while and i do not want my chickens blamed for it and i do not want the mice to breed
