I've heard that chilling, going to room temp, then chilling again can cause off flavors/head retention problems in beer do to the way CO2 is absorbed. Is this an ale or a lager? If it's an ale I wouldn't even worry about cold storage. Just make sure your beer is refrigerated for at least 24 hours before drinking to once again, allow for that Co2 to be absorbed (ultimately helps with head retention and mouth feel). You might want to look around in the forums for some more information. good luck!