150w HPS for TINY GROW TENT ADVICE!

OK here goes. Picture this setup; 150w HPS with incorporated ballast. The grow tent is tiny measuring 16 inches square and 4 ft. tall. Basically the Secret Jardin DR-40. I can fit 2 LARGE rectangular tupperware containers comfortably and want w grow 2 WW's in there. The tent has port holes on every side including (4) 6in. and (4) 4in. plus one 6in. on top. The grow light is 15 inches long and just fits perfect inside. I know my problem is going to be heat. What is the best way to keep temps into the acceptable range or is this simply not realistic? I am thinking of using 2 6in. duct fans; one at the bottom sucking in and the other as an exhaust pushing out at the top. Any ideas? Thanks for looking.

Well I set everything up with only a 6 in. clip-on fan facing one of the many port holes so it is blowing out. It is facing one of the bottom port holes. the lite is closer to the top. the thermometer is about halfway up. With the lite on for several hours and with that one very strategically placed clip-on fan I am getting temps of around 83. If I used 2 6in. duct fans or 6in. axial fans, one for intake and one for out take, I should be able to keep temps even cooler. Any ideas? Thanks for looking.

heat rises so you would be better to vent out the top.
adding a intake fan is a waste as the exhaust fan will pull in the air it needs but a 6 in duct fan should be the ticket.
last thought, it works now for temps but what about in july when the room it is in hits 90?or is it basement or air conditioned?