It said specifically on that site you linked to that two or three would cover a four by eight area, and that you would need more lights than you might think for certain sun loving plants...well...marijuana likes a warm, dry, well lit environment.And 1400 dollars is NUTS.Even if you were only growing in say, a 4x4 room,you'd still need the 250 and maybe another smaller led panel besides...and that's IF you're really getting the same performance out of them as a HID light, like they say...which I doubt.So, what, That's maybe 1600 bucks for a 250 and say a 45 watt?So for 1600 dollars, you get 295 watts of unproven lights.You could get 2 150 watt HID lights.Only five watts difference, and 1300 dollars cheaper.And you could get one 150 mh, and one hps...run them simultaneously, and you've got a full spectrum setup.And HID lights have been proven in grows over and over again.And since I'd only be running 5 more watts a month, it's going to be a very long time before your setup pays for itself.And if you add the fact that with the money I would save, I could purchase the best nutes, soil, and seeds, and still probably have some left over out of that 1600....I say it's not a deal at all.But i look foreward to seeing your grow.