MN :
One of the things that you will have to watch is the possibility of the BC dying from the cold. Here is the problem -- if they die your pond goal and the forage for the eyes are gone. If the BC live then you will need predators that can control the large numbers of BC offspring (up to 180,000) per female per year one year and then maybe small #s the next year (large variation of BC spawn from year to year).
You might think about some larger eyes along with the esox. A few adult BG might help as a source of back up forage if you have a BC year class failure and they will also eat BC yoy to 2in. in size. FH will remain important in the mix.