Shrek,
Typically 60% is north of the g line. Bases like ord and den have seen very senior g lines though. You could check the bes awards in pbs and see what that seniority is getting but the answer can be muttled by folks bidding down to reserve and folks who are below the gline getting a line. It will give you a rough idea though. Best way is to ask someone who is currently in the Bes. Generally 85% or better is enough to get you above the g line and off reserve.