Cool Tube Fan Question

Ok, so you've all seen the secksy girls loving the CFLs. Well 5 cfls are great and all....but I've got this badass 1000 watt HPS cool tube just sitting in the back waiting to be used. The only thing we still need is an exhaust fan for the room where that light is to be set up. I'd guess the room is approx 6x6x7 or 7x7x7 or so, so I was wondering what fan setup would be best?

Setup 1: Get two relativelly smaller fans and have the cool tube in its complete enclosed ventillation circuit. Like have air from outside the room blown in across the cool tube and back out of the room and have a second smaller fan for intake.

Setup 2: Get one big assed fan (like 465 cfm) and have it act pull air out of the room across the cool tube and out.

I know the first setup would probably be ideal, but I think the second one may be easier to construct and would be cheaper since we only really need one fan. I was just wondering if anyone could tell me what size fan(s) I'll need approximately? Also, any suggestions?:rasta:

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