There is a lot of Info here to digest.
First, do a search here and on the internet about Hybrid Bluegill and Green sunfish. Hybrid bluegill reproduce slowly and eventually revert back to the less than desirable green sunfish. Pure strain bluegills will provide a much better forage base (higher reproductive rate) and they can grow to very respectable sizes.
The fact that you are catching very few smaller LMB is somewhat odd. Crappie predation? LMB predation? hmmmmmm I don't think I would spend much money stocking small bass until you figure out what is offing the ones you have now. In fact, with the seemingly healthy population of large LMB you have, I would be hesitant to stock any smaller fish. LMB are extremely efficient predators. They will take a huge toll on your new stockers. Instead, I would probably spend the money on a survey. In the meantime, the relative weight of your LMB would be useful. This will help you evaluate whether or not your LMB have enough to eat. Do you keep a log of the weights and lengths of the fish you catch?
Good Luck
