Good ventilation ideas?

I have a 2deepx4longx8high closet, I have a 600 watt hps dual spec coming in the mail in a couple days. I would like to keep the lights on a lot, but I need to sleep in the bedroom, I can't keep
the closet open, obviously, cuz I'll neveer fall asleep lol.

What the hell can I do before these lights get here so that they don't overheat this closet? Cutting holes isn't really an option. Please someone help. Always +rep for any useful help.

Bump... Anybody?

I think your screwed based upon the limitations imposed. That closet is going to get damn hot as all that heat is just going to collect & build upon itself... a 600 + ballast will pump out some btu's. Venting is going to be necessary, so cutting a hole in the drywall or running vent tubing out the door or something...? You could try a portable a/c unit & vent into the closet as well, but holes or door open...? I would personally bust the closet out into the bedroom & sleep in the bath tub! )

Lmao. Funny thing is, I'm pretty sure that's what it will come down too haha. What about a 150w hps?