I know Creek Chubs won't spawn in ponds, and don't believe White Suckers will either. Also, after I researched White Suckers a while back Travis and Cody indicated they top out at 20" and 6 pounds. I wouldn't want a pond full of 20" suckers in my fishery...
Think GSH, LCS, YP, Crays, and some minnow or other shiner species for SMB forage. Along with a pellet program the SMB won't stress the forage base too much. My SMB are all well over 100 WR on forage base of pellets, YP, BG and GSH.