Im having trouble deciding on what wattage of light or lights to buy for my room. my closet is approx 75 inches long by 24 inches wide ( 6 1/4ft x 2ft) (2m x 0.6m) it is approx 7 ft high but i wanted to have the top portion house 2 mothers. so the main chamber will be roughly 4 and a half feet tall. i was originally thinking of having a single 600 watt hps/mh hung from the center, but with the length of the room i was wonder if 2 250s would be more appropriate. or even 2 150s due to price issues.. i have a 440cfm i figured would be enough to cool a 6 inch cool tube with a filter and thats what im ready to set up now, but before i go furthur i want to make sure i get the best light setup. any ideas or opinions?