heat exhausting question

I have a 400W aircooled light. Does it matter which side of my light i have my can fan.

No it dosent matter...

Don't think so.

air cooled lights work on the idea that it will remove the heat before it has a chance to dissipate into your room. If you have a high cfm fan you should be more than OK. however make sure that you are sucking not blowing. By the way, nice set up!

sucking not blowing so does that mean i should move my fan to the exhaust side of the reflector