Welcome Scott to the PB Forum. I agree with George. Find larger HSB to stock and stock about 50. Add a few each year or two as the numbers go down through catching. With a 2 year old pond and fish the fish will be growing fast and the pond nearing carrying capacity. I would not want to remove my first/oldest LMB at 2 years to make room for the HSB. The feeding will help offset the carrying capacity situation but not enough IMO to add 250 adult HSB. You will need to watch your forage situation with more adult predators. Even with feeding pellets the HSB will eat a lot of fish forage also.