I have a grow tent 32x32x63 and I am wondering if 600w MH & HPS is too much and if I should downgrade to a 400w for my tent? The hood of my light will be air cooled hood. I don't know how to set up the exhaust system. I know I need ducting, fans, and a carbon scrubber, but how do I set it up. What goes where?? What kind of fans. I know the fan is suppose to remove hot air so will I need another fan to bring in cool air and how does that work. Please I need step by step help. Ive grown before but not in a grow tent so I need this to be legit. please help