Ventilating a 36"x20"x62" Grow Tent

Hey guys, was gonna get a small tent for my closet thats slightly bigger than the 36"x20"x62" Grow Tent, and was wondering what recomendations you guys have for ventilating this thing properly. I will be using a 250 W HPS and MH in it. Any suggestions?

http://www.greners.com/fans-ventila...fans/ecoplus-inline-duct-booster-160-cfm.html
this maybe?
also just a good site in general
good luck

Thanks so much! Got a 135 CFM inline for it, works great! Thanks