As you guys may have guessed, the cross attempt appears to have been a failure. The RES is still super fat but I am now starting to question if it is a SHE. It is definitely way more aggressive with eating than the bluegill so I suspect it's just a belly full of food. I even pulled "her" out a few times over the last 3 or 4 weeks to see if I could express any eggs with no luck. I still have them together in the tank but not sure what the future will be for them.
I did get 2 additional 250 gal tanks with the hope of needing room for hybrid fry. Last week I caught about 15 fingerling BG for one of the tanks. My summer project will be to see how quickly I can grow out a bruiser BG in a tank setup. I think I will start another thread for that project.