LED is too hot and expensive, and hot is also the problem that occurs the short life span of LED. if i were you, i would rather try HID, though it's life is short, but it's cheap.
you can also try induction grow light, better than LED, google it
just get some new progress on growing, and i uploaded the journal on youtube.
i'll be very thankful if you could give some advise.
Here is the link.
hxxp://youtu.be/nV5q-xfndsQ