I think you have a good plan in place, hopefully the perch will keep the BG population in check since they will only spawn a couple times a year. Keep us up to date with the activity at your feeder. With a pond that size you should be able to easily adjust your populations as long as you enjoy fishing.

The only problem I have with a feeder is that it starts to make the fish more like pets...that you end up having to harvest as some point.