idunno thats a huge light for that small space. not to mention mh bulbs get blazin hot. I dont think ur gonna drop temps enough with one or 2 solutions. ur probably gonna need a cooled hood+ 300cfm or more duct fan or blower and maybe an ac for the room i had a 2x4x6 room and it never got cool so i moved to my closet which is alot bigger and stays like 15 degress cooler and i only upgraded to a 465cfm blower u need to get cool air in and hot air out asap. ur temps should drop when u flower if u use a hps bulb they run a little cooler.