i think you could do it. Air cooled hood, 4 or 6 inch fan. just check around for ventilation ideas because you cant beat a 400hps compared to cfls if temps are right:thumbsup:

this guy is working in a small space getting 12-14 ounces off a 400hps + a couple of cfls. http://boards.cannabis.com/closet-ca...ly-ladies.html