Depends on whether you subscribe to the 4 sq ft per bird rule or the 10 sq ft per bird rule, or something in between. Also depends on whether you are confining your hens to the coop or providing a run or free range in addition to the coop.
If you have no run and they will not be free-ranged, I would not keep more than three heavy chickens in that space or four or five bantams, max, but I subscribed to the bigger space rule. My eight have 9 sq ft each in their coop.
If you have a run of at least another 25 square feet, you could double that to six, but five would be better. If you free range in a large yard and the coop will only be for sleeping, you can probably get away with six that way also.
You have way more nest boxes than you will ever need for the number of chickens you can keep in that coop. You only need one per every 4 layers. I am a little generous too, as I have three boxes for eight hens.
Hope this helps. I am sure there are other views. Some will say fewer and some will pack them a little tighter.
UGCM