I agree with your plan. HBG have proven to be pretty prolific in my BOW. I think they have crossed with my RES, which is producing some interesting fish, but too many of them. My HSB and SMB are not close to keeping up. The trap is helping. They readily come into the trap.

9 yr old pond, 1 ac, 15' deep.
RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these.
I think that's about all I should put in my little pond.
Otter attack in 2023