Yeah man, cool. That tasty led sure looks stocky as you say. 6 kilos? They're most all fan cooled in those boxes so the fans draw some wasted wattage, but watt for watt, led panels sure can illuminate a space these days. I got great results with led last year. Excited to see more about your DIY cobb Cree. Sounds like you're going to have a nice spread of light in there