Hold off on adding any gamefish. You don't want anything eating the YOY minnows for the first season. A full season for reproduction will create a lot of forage minnows for the next season's gamefish and that lot will create even more. The second seasons YOY minnows will be the base diet for the smaller stocked fingerlings leaving the adults to keep making more. Do your homework on what types of structures the the minnow species that you choose require for adequate reproduction. I know the FHM's need elevated flat surfaces that they can lay eggs on and the GSH like submerged grasses , IIRC. You'll get much better results by adding ample structure for the minnows to do their thing. Without the structure, reproduction will be limited at best.