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Air cooled hoods will be a must. Can you vent to the outside? Your best bet would be to pull cool air in from outside, cool the hoods then exhaust outside again. If you use carbon filter I'd use a second fan.
Imho (just set up my tent yesterday) how cool you can get it is going to depend on how much air you are using to cool and more importantly where you suck it in from and exhaust it too.