I have read a few places about people putting solar lights in their coop for the winter. Have it set to come on ~5AM til sunrise. What kind of light specifically should I get? I have access to a Harbor Freight, Home Depot, and Lowes. I have heard of people putting them on timers.... are the timers something I have to get separately, or can I actually buy a light with a timer? Sorry for all the questions, just want to get it right the first time.