Thank you all for the responses. Those are all great points. It was definitely my concern that it would heat up. I definitely like the thought of being able to convert the building and it sounds like its possible with enough ventilation and fixing the condensation issues. To answer the questions my plan would be to create a run that connects to the other chicken coop and run since they are in direct line with each other. I certainly plan on all of the chickens being able to hit the run throughout the day and put them up in the coops at night. Fortunately for me and the chickens I work from home as well as my wife is home also. So from what has been said it seems it could work. Especially from your ideas KillerB I could remove some of the panels and replace with hardware cloth and as far as that goes I could replace some panels with some type of improvised vented panels all the way around that I could climate control year round. Thanks so much for the ideas. I will update in the future what I do with it. Haha haven't even bought my first chickens yet and already making room for expansion. haha.
