Funny stuff, Yolk.
Eddie, I concur with CJ - as long as you have a decent population of LMB, the bass will keep them in check, and once the CNBG get decent-sized the GSF will have a hard time competing and will be uncommon to catch.
BTW, hope I didn't sound too elitist in my offer to advise you on getting your bluegill to a pound. The formula is not that complicated: fertilize on a regular schedule to maintain a plankton bloom from March through October, don't keep a lot of bass so there will be plenty to keep the bluegill numbers in check, and once your bluegill start getting to 8" or better (which should be within a year and a half or so of initial stocking if you're fertilizing), don't keep more than 20 or so above 8" per acre per year. Stocking grass shrimp could speed their growth if the shrimp get established. And, lastly, the silver bullet of bluegill management, install two or three automatic feeders - Sweeney and Texas Hunter are great quality, probably the best, but if you can't spend that much Aquapro makes a great $89 model that Bruce and I both use - and feed a high-protein-content fish chow such as Aquamax 500, two or three times a day. If you install the feeders now, while your pond population is balanced, you just about couldn't help but get several CNBG in the pound range within three years or possibly sooner. Get yourself an ultralight rod with six-pound test, toss out a red wriggler or cricket on a light-wire hook with little or no weight and a very skinny float near one of the feeders, and you'll have yourself a bull battle.
