That's a good config you have there. You could probably bump the max to 14 if there's nothing running on the server.
I seldom bother setting the min in SQL 2005 and higher. The minimum isn't the amount that SQL will take as it starts up, just the value that it will not drop below once it has been reached. If there's nothing else on the server, there's no reason SQL would be forced to reduce memory usage.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass