Hi all, i'm seting up 2 8x8 flowering rooms :hump: hoping to put 60 plants in each room!! just wanted to know what u think is better...... 4 600W hps or one 1000W hps (if thats a enuff for an 8x8 room) both will have co2 and one othere thingwill i need to vent the room with co2 if the lights are...