And if you still have that itchy trigger finger come November (when you hit 6 months), I am SURE that you will be able to find some retailer who is desperate for business in this economy who will give you one come holiday shopping season...........you know, the ol' "Everything you buy today is 15% off with a new store credit card!"....
Just be careful as Hauling says. You probably don't need anymore than 1 or 2 more cards, and your next issue will be the relatively small CL's you have. Got to get those CLI's. Request one from each card when you hit 6 months, and then do it every 6 months afterwards. Not all will give you one, but you definitely should ask.