SMB like crayfish far more than LMB. A pond stocking strategy aimed at SMB should include crayfish in my opinion. I would also look at stocking grass shrimp.
As far as forage fish, the classic FHM would be the back bone to start out. However, after the SMB successfully reproduce the FHM will likely disappear from the pond. When you see FHM numbers starting to dwindle, I'd stocked 5 pounds per acre of larger brooder sized GSH. RES can be stocked as an alternative forage as well with the added benefit of snail control. If you can source LCS, they would likely be an excellent forage choice for SMB as well. When Chris drains his pond, he'll have to see if any of his LCS survived.
Other far less conventional species which I think make excellent forage for SMB include RBS with the added benefit of an additional panfish to catch. Banded killifish would also be an excellent choice. Orangespotted sunfish would be a possible forage option. These species are viable options for Texas waters. More northern ponds have further unconventional species as options.
