If killing off the pond isn't an option for you, then you need to solely focus on that forage base. If your goals are large bass, you're way behind already. Bluegill should probably be added immediately.
What I would do is try to remove as many bass now as I could. Fish, trap, cast net, seine, drain down, whatever you have to do. Remove as many as you can now, reduce their effect as much as possible. Proceed with your forage plans, but continue to remove as many of these bass as you can.
