There are some very good examples of quality RES /SMB ponds with FH and another minnow type and even a few with that plus HSB and another low offspring lepomis (other than BG). You have options especially if feeding. YP and WE might also work in small numbers. As a general rule the more species the harder to manage because the interactions are so large and unknown within a closed environment.

Don't worry about the amount of FH to start (maybe 25 lbs) but don't put in the GSH with the FH to start. Let the FH have time to reproduce before adding any fish other than another minnow type. You can start FH anytime you have water that is 30 days old (assuming its not frozen). If you have 1/2 acre of water and ok temps then add the FH. Any other plan you decide on can be done on top of FH without issue.