With lots of 10 inch bass, it sounds like you have a classic over=population of LMB. Withe the WCP in a small body of water, that may be a good thing and why you see so many nice size WCP and only a few LMB hogs.

Your only reasonable choice on adding BG that have any chance of not becoming expensive snacks is to stock some advanced sizes, over 5 inches.

I am sending you a PM....