Question before I start this idea, I currently have 3 rhode island reds and 3 leg horns I am going to be increasing my flock number soon. I have an old f100 I was thinking to save cost right now to convert it into a coop. I am planning on rubberizing the floor insulating it from draft. Would this work? My ladies have an approximate 30x 30 run for the day and they have other shelters for rain.