Be careful with inexpensive LEDs found on Amazon, eBay, (Mars Hydro, et. al.). They aren't good investments. They usually run as hot/inefficient as CFL or HID. If efficiency isn't important, then they aren't a lot of money to lose. But, T5HO and CMH will produce more useable light for less watts than those inexpensive LEDs. And, you can replace parts, etc., forever, using commoditized transformers, bulbs, etc.
With those, you'd have to run 40-60w/sq ft. At that point, T5HO at 40w/sq ft (and lifetime serviceability) is a better choice for shorter grows. CMH at 35-40w/sq ft is a better choice for taller grows (and again, serviceable for life).