Sunil, are you thinking the Shiners will be needed/valuable as another source of forage because the CNBG aren't enough? I will look into sourcing them.
Culling is a big thing and so is forage base. Structure has a big part too.
Golden Shiners, in mass quantities, are available by truck for Golden Shiners and by box shipment for GS frye. Anderson's Fish Farm does the frye shipments. It's about $300 shipped for like 250,000 GS frye. You'd need a bunch of boxes!!
Also, I don't know of fertile your water is, but maybe others could speak to fertilization as part of the overall plan.