If you could get various sizes of Tiger Muskie, it would be beneficial, but if you can only source 6-7" Tiger Muskie, then you have to go with it.

You may experience some predation on 6-7" Tiger Muskie depending on what other larger predators you have across the 22 acres, but you could make up for that in the initial stocking numbers.

Maybe go with (4) Tiger Muskie per acre, or an even 100 Tiger Muskie.

Along with that, do massive culling on all Black Crappie you catch, unless you catch a particularly large one or healthy one (only because BC is one of your desired species).

I think you'll have a hard time getting any kind of forage base established until you get your over-population problem corrected.