Lee, here's your answer. For a 5 acre lake, 3 1/2 years old, properly stocked in the beginning, in the south, it's okay to begin harvesting bluegill. Don't take the largest, they are your key broodfish. Larger ones prevent younger bluegill from reaching sexual maturity too quickly. When a bluegill begins spawning, its growth rate slows considerably. Since you are managing for trophy bass, you need bigger bluegill over time.
Remove as many as 50 pounds per acre per year, from a lake with a feeder. Catch fish away from the feeder, and take out 5-7" fish. A five gallon bucket, with no water, holds 30 pounds of bluegill. Also, a heavy six inch bluegill weighs about four to six per pound.
As you go, weigh and measure bass. They will be a guiding light when to harvest bluegill, as well as when to start a slot limit for bigmouths.
As you know, pond management is a balancing act.

Teach a man to grow fish...
He can teach to catch fish...