Two weeks ago, we received a pre-built coop and three chicks. We saw the coop at a farmers market and talked with the supplier, and it seemed like an easy way to get started with chickens. As he dropped off the coop and chicks, the supplier provided some basic information but, within an hour, I already had questions about chick care and quickly found my way to this site. (Thank you everyone!) Now that I'm much better informed, I'm not sure about the design qualities of this coop. I have some improvements in mind, but first would like to get feedback with your ideas. First, some data. We live in the Tampa area, and our winter low temps are usually in the 40s, sometimes 30s, rarely 20s. So I'm not worried about cold but right now the chicks are only 25 days old. We've had them inside in a bathroom, and are planning to transition them outside soon. Should I be concerned about keeping young chickens warm if the temps get into the 30s through the rest of our winter (until mid-February)? They would be about 3 months old then. The coop and a nesting box: From the pics, you can see the coop includes a run (8' long x 4' wide) and coop housing. The structure is movable. The inside dimensions of the triangular coop housing are 2' long and 4' wide. Not all of the 4' width is useable due to the slanted roof. The floor of the coop housing is wire mesh, with 1" x 1/2" rectangles. I have two primary concerns -- the wire mesh floor, and lack of perches. It's my understanding from the supplier that there's no need for straw or shavings on the floor, but what about drafts and chickens trying to keep their feet warm? Should I put shavings on that wire mesh floor? As far as perches, it seems that every coop design includes perches to accommodate chickens' innate desire to roost on perches. I can install a perch though it might be only 2" above the floor. Should I bother to install a perch? However, I have limited options where to install a perch and want to be mindful of adult chicken "headroom" due to the slanted roof. These are Production Red chickens. How tall will they grow? Also, how much room is needed between a perch and a wall behind the perch? I also have a concern about the one nesting box that was provided. Is its 9"x 9" interior size big enough, and is one box enough for three chickens? Finally, with your experienced eyes, is there anything about this design I should think about improving? And if you say, "You'd better think about building one instead...", that's okay! Thank you so much for whatever feedback you can provide. I want to make sure improvements are in place before transitioning the chicks outside.