I have my wood storage behind my pole building where there currently isn't any outdoor lighting. I am going to add a light on the back side of the building about 14' off the ground so I can split wood after work. The light will only be used when I'm working but I would like something reasonably efficient, instant on, white light and obviously work in the cold. A trip to HD and there are a number of choices but it's difficult to compare the output. Possibilities are Fluorescent, Quartz, Metal Halide, or LED. Any suggestions?