No matter where the LMB came from, I would remove as many as possible of every size. So, every durn one you catch you remove. Don't feel sorry for the fish and let it go.
Hit it hard and fast between now and Feb before they pull off a spawn. That way it will lessen the hit on your pocketbook when you stock the CNBG.
You have to stock CNBG at least 1/3 to 1/4 the length of the largest LMB to avoid being eaten. Or stock 30%-50% more than suggested for a pond without predators and hope/pray that not all get eaten.
With that RW, the bass will be hungry..........
