Before good advice can be given, what's your primary goal for the fishery? Just a healthy balance? Are you looking for a self sustaining fishery or are you willing to put a little more work into it? Do you plan on feeding your fish? Any species in particular you'd like to see in it? Answering these questions will provide better recommendations. This is a pivotal time in your pond's fishery. Stock it correctly now will save you many headaches later... So be patient, it'll pay off in the end!