i agree. Cheap leds are good for a veg sitiuation though. I have a Led panel in my veg room and i got no gripes. I dont think id ever try to flower with Leds unless i had the money for a proper setup. HID is tried and true.You would need a lot of LEDs for that many plants and unless you purchased very high quality LEDs, which would be very expensive LEDs, your results would not be anything to write home about.
HID lighting would be a better bet for you unless you have very deep pockets and are willing to reach all the way down to the bottom of them.