Tent setup questions

I'm wanting to put a 400w HPS in a 2x2x5.25 tent like this one:
http://www.monstergardens.com/porta...vmshopgreen.tpl&product_id=513&category_id=87

So my question is how to beat the heat? I'll be using this light with air cooled reflector:
http://www.monstergardens.com/grow-...mshopgreen.tpl&product_id=613&category_id=300

What fan do I need for exhaust? And carbon filter? I was thinking these..

Fan
http://www.monstergardens.com/fans-...mshopgreen.tpl&product_id=118&category_id=107

Filter
http://www.monstergardens.com/fans-...shopgreen.tpl&product_id=1567&category_id=295

Looking for input..please let me know what you guys think!!!

That reflector is 25" wide...

Seems damn expensive for a 400 watt.

http://www.htgsupply.com/Product-HTGSupply-Ultimate-400w-HPS-&-MH-Grow-Light.asp

Are you really limited to a 2x2 area? I'd think about going 4x4 w/ 600 watts - you could get damn near double the yield for the same / less money.

I grow with a similar tent, i posted a link to it below, its a lot cheaper off of amazon. When growing in a tent that size, it is almost mandatory that you have an air cooled hood. I had a bat wing reflector in my tent at first and had major heat issues. I bought an air cooled hood and some inline exhaust fans and now my temps are great. I also run a 400 watt MH/HPS bulb in my tent, and it puts out plenty of light for the tent. My suggestions would to get a bigger tent, I am currently looking at getting a bigger tent for my set up due to the limitations that this tent has.

http://www.amazon.com/LEDwholesaler...Q59M/ref=sr_1_1?ie=UTF8&qid=1335682188&sr=8-1