how many watts?(pic)

[smokinbudz420]

its been real cold lately where i am, weve had frost 2-3 times already, and i decided i need to do something with my plant i have outside. Been growing it for too long just to let it die so i moved it into my shed with a couple of lights, but im not sure if its enough light for the size of the plant. Im used to dealing with plants like 2 feet tall or so but this thing is almost 5 feet tall.

Right now i have a 500W fluorescent flood light and 1, 120w fluorescent. Just wondering if that is enough for the size of the plant? seems ok but doesnt get to the lower buds, should i just put another light lower than the rest so the lower buds get decent light too?