I would leave the lights on all the time..that way you dont lose the image when the camera transitions between day and night mode...you will get an overall better capture. Use led bulbs and a timer like this or a dusk to dawn sensor. http://www.amazon.com/Honeywell-Eco...pebp=1438129930245&perid=1ZMREPFYHRAV7HX546AK it uses your coordinates to compute sunrise sunset.
Great advice but keep one thing in mind, Lights attract bugs so if these lights are by your entry doors your bound to get many bugs in your house when people come & go. I have been fighting this for years and the reason I don't keep my entry lights on all the time. Just saying
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