I would eventually suggest switching the cfls to a single hps, since you want a small stealth grow a 150w. With a single light you can isolate the heat and exhaust more efficiently. However, Given the situation you are in the only thing to do is move more air man, more fans blowing at your cfls to remove that generated heat. Its fairly cheap and simple to wire a spare computer fan using an old cell phone charger. Your plants look good though, they should crystal up nice in the next 3 weeks or so.
-Wristy