bowtiebubba, the Missouri Dept of Conservation has a very good article about how to manage crappie in Missouri ponds. You can look for their web site with the search function.
Next, there is absolutely no law that says you have to stock only little fish. Especially this time of year, you can easily get breeding size fish. There isn't any reason you can't get a spawn or two yet this year. I'm talking about bluegill now. You probably also would want to stock the redears yet this year. The LMB and crappie can be stocked next spring.
