If you do go with the threadfins, stock them in the spring like Greg said. The idea is to stock them just before they spawn. With a young bass population, they should establish easily. You are far enough south you also don't have to worry about winter kills with threadfins.
With golden shiners(GSH), if you have a young bass population, stock 5 pounds per acre of larger adult GSH. Say, fish 5-6" plus in size. At that size, they should mostly avoid predation by your new bass and will pull of a spawn. I think GSH would also be a good addition to your pond if you are trying to grow larger bass...
