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  
