I'll be very interested to see how that combination works out. There has been past talk of blue catfish/HSB combination. I think if you stocked HSB and blue cats gave them a bit of a head start on the black crappies would be your best chance at keeping the crappies under control. I would not give your BG any head start on the blue catfish or HSB. If anything I would stock the BG and crappies a couple years after the blue cats and HSB go in...