Nice, more ventilation will make your chickens happier and keep them healthier. Maybe you could add a window in the front and the other side. Adding long vents at the top front and backside left open and covered with 1/2" hardware cloth, especially with the metal roof. Definitely cover all your openings with hardware cloth.
My front and back sofits are just covered with 1/2" hardware cloth. I have to make my windows still but I have 2 on the sides as well as the two in front. They will be 24 x 24.
Very nice! I am in the process of making us a coop out of the broken playset. I cant wait to post my finished picture but we have had nothing but cold rainy days here lately! I can actually stand up inside! i kind of wanted a bigger door for me to go through but i gotta take what my husband made lol... im going to have the two top windows across from another with window well covers over those and the two bottom doors im having chicken wire over those as well just going to put doors on the bigger ones on the bottom just incase bad weather... They are also getting ventilation under where the roof hangs over. I got the milk crates that im going to cut to make their nesting boxes. ThenIm going to get a mat to put on the floor for easy clean up.