TJ,
With how your pond is setup with smallies and yellow perch, I would steer clear of trying to grow big redear sunfish in the pond. I been thinking how to grow bigger ones in your pond, but really I wouldn't want their preferred food to be plentiful... Yellow perch and smallmouth both seem to be pretty wormy fish prone to parasites..... keeping the snails cleaned up will only help cut down on parasites.. Basically what I'm saying is you don't want to create ideal redear habitat and food...

So you are gonna have to grow big redears somewhere else and move them into your main pond...also prob don't cull the small redears, but rather just have the boy focus on removing the bluegills....