Also you can just initially stock smallies with your bluegill. (holdout on the largemouth just at first) Your original stocked smallies at about 100 per acre and your initial stocked bluegill at about 750 per acre will grow into really nice fish and sustain the fishery for usually about 10 years. But if you want to keep it rolling then here are some tips to take it out even further than 10 years, but you have to be proactive-

so then as your bluegill start reproducing and getting out of hand you can introduce about 25 largemouth bass to the acre and they will rapidly grow large as well. Then as the largemouth bass start to reproduce in the pond simply remove as many as you catch and also add about 25 6-8" smb per acre per fall (starting with year two) and that will give you some very very good fish of diverse species in your pond for a long time.