I'm building a stealth SCROG system in a 3 X 1 x 3 kitchen cabinet. I've ordered a Maverick Aluminum 400w HPS with MagniWing reflector, an Eclipse 4" 210 CFM In-line Centrifugal Exhaust Fan and a 4" Triple layer, Freshmaker carbon filter (516 CFM Max) from Hydroasis. The guy I spoke to on the phone suggested using a portable a/c to cool the box as oppossed to intake fans. A portable a/c unit is not exactly stealth and I'd rather use fans. Any suggestions on how many I should use and the locations? Thanks..