I want to put a light on a timer in my coop to provide 12-14 hours of light for this winter. My coop is an old dark barn with a window on 1 end and a door on the other. Presently I have an overhead light fixture in the middle and 2 plug ins by the door. What kind of light fixture do you use, a shoplight or a brooder type light, so that it can be on a timer?