Ive got this new space its 13 ft x 4 ft.I need to decide if I should run 4 lights or 3 lights. It seems that im able to use 3 (two 1000,s and a 600 watt) But its a group garden and My lights are the 1000,s his are the 600 watts and we are spliting the yeild 50/50. My main question is in a co2 room can I get more yeild off 4 lights or am I just paying more on power? the room is 13 feet long 4feet wide and 6 ft.4in.tall. I plan on triggering as bushes or trellised at 1.5 feet tall.