Quality bluegill and numerous small, hungry bass are an ideal combination. VERY doable.
I'm not completely anti-hybrid, but I'd strongly consider all of the possibilities before introducing hybrids. You can create a self-sustaining population of native bluegill with great growth potential and good numbers of catchable northern strain largemouth bass. Redears are awesome, and should be strongly considered.
Why coppernose? Just wondering. Not sure how far south Mansfield is.
There's plenty of threads on creating big bluegill fisheries, and there was an article in Pond Boss magazine last March you might want to check out that I wrote. There is also an upcoming issue in next month's Pond Boss that would be worthy of perusing.
Strongly, emphatically recommend subscription to the magazine. It's a teeny, tiny investment compared to what you've probably already spent.
