My error I did not read carefully enough the BG and RES and FH are there now. With that being the case I would go with SMB ,YP and a few HSB and see what happens and manage from there. You could use GShiners they would be added forage and may help suppress the BG a little by eating eggs and yoy. What we need is some help with the numbers and timing and that depends somewhat on what is available and in what size. Since you put some large BG in I would start looking for small 2-4 in. predators now to see what is available and when. Then decide what plan of action to follow. That is provided you think you will have enough water to fill the pond.