My dear, city raised husband surprised me for my birthday with a coop from Sam's. I've been wanting backyard chickens for forever and we recently moved where they are allowed. He had already assembled it and added and extra coat of paint before revealing it to me after I had my birthday dinner. Unfortunately, this coop is too small for the 5 chicks I now have once they are grown. I live in an area which can see -20 F in the deepest depths of winter and 100+ F in the summer. I would love to do the deep litter method and add an automatic door. Ultimately the chicken coop will be placed inside a double fence around my garden that will double as a deer deterrent and a chicken run. I will definitely be adding more secure latches and hardware cloth to the vent openings. But how can I adjust this to fit 5 chickens? Any advice appreciated!