This is by far a "cheaper" option, but should work just fine. I'm about
to do the same myself.
Grab a used cab here - http://www.usedtowers.com/CABINETS/CABINETS.htm
Some of those come with the factory huge AC systems built for thousands
of watts of equipment inside, but if you're like me and will have
300-400 watts max, grab a non-cooled cabinet for cheap.
Then pick up one of these guys and slap it on, buy the capacity you
need. You can get them with a heating option as well, they're
thermoelectric and very affordable-
http://www.eicsolutions.com/thermoelectric-air-conditioners.php
--
Jon Sands
Fohdeesha Media
http://fohdeesha.com/