Grow Room Questions

Just need some advice if anyone would be so kind...

My 600w hps/mh is on its way along with a cool tube, 2 400+ cfm fans and a carbon filter. My question is.. Will those fans be enough to keep my lights so cool to the point that I don't need intake/exhaust into the room? I'll be adding a little fan just for circulation and want to know if that would be cool enough. The room is about 2.5x 7x 5.

A four foot length of the closet will house my 600w light, a scrog grow with 2 plants and the rest of the closet will allow me to snugly fit a dresser I rigged up for a little clone/veg chamber. The clone/veg dresser would be difficult to exhaust outside the whole closet so I need the ambient temp in my closet to be low enough.

Kinda confusing but if anyone could help it'd be greatly appreciated. Sorry for rambling, treated myself to a few buds of the outdoor crop from this year! =D

its tough to say, if the ambient air is low enough you should be fine. If all else fails.... detach the intake on the light so that you are drawing air from the inside of the chamber. then use the extra fan to exhaust the closet. I have 1x 750cfm that pulls the heat from the room and 2x1000w lamps. keeps it the same temp as the air outside the room

yea hard to say without the lights plugged in already. you can hover at 80 degrees or so without damaging the plants. ive heard of people staying around 85 degrees but thats about where ya get into heat issues.