No one is trying to take away from your excitement - quite the opposite, really, as the issues that can arise from this particular situation will take away from what is meant to be a joyful, fun experience for you and the birds. Pointing out potential problems and concerns is done with the best...
Which coop did you buy and how many birds are you housing? Unless you are keeping 1/2 or less the number listed on the coop box, paperwork, etc your birds do not have plenty of room. There is not a prefab available from TSC that would grant your birds anywhere near 4 square feet each inside...