Nice catch. What I find odd is bluegill in the lower lake at Nickajack are smaller fish.....I am assuming you are fishing headwaters of Nickajack. It is rare to catch numbers of 9 inch fish...8 inch are common. Shell crackers in the lower lake however attain good size...as do the redbreast sunfish. I just find that odd. Talked to a lot of folks who fish the lower lake and they tell me the same.
Regards