Just sitting here thinking and that is rare and spooky. I offer this possible contrarian thought.
OK, if you stock the crappie, the bass and bluegill will or should control the offspring. However, the F1 crappies that you stock should do the same job of cleaning out the offspring of the bass and BG. They're pretty well known for that. When the original stocker bass get too big to prey on crappie fry, you might be depending on the decimated BG population to keep the crappie in check.
It should be an interesting experiment.
Good points...I'm not too worried about the SMB or BG populations as I will be raising SMB and will supplement stock annually - and BG are right down the road at Dr. Frankendello's place...
I think I'll try stocking some in a .2 acre pond I have full of FHM and GSH first and see how things progress. Might add a few CSBG and YP also.