I am not a expert, but that many fish in a 1/4 acre pond might be too many. I don't think you are going to be able to grow really large LMB. Further, being able to keep your pond balanced is going to be very tricky.
In a 1/4 acre pond, you are only going to be able to have a few LMB ( I think the number is less than 10, maybe even 5).
CLB is right, track the forage fish, they are the backbone of your pond.
