My buddy and I have a pond in the MS Delta. It is about a 2 acre pond and has been around for many years. The previous property owner said he never stocked it or managed it in any way. He owned the property for about 8 years. Our goal is to have a catfish pond that our kids (and us) can fish. We want catfish mainly because they taste good and are relatively easy to catch. Here are some questions I have (but any advice would be appreciated)

1- Do we need to kill off all any fish that currently in the pond?
(If we do kill all the fish- what happens to them)
2- Can we stock just catfish (if not, what other species should we stock)?
3- Can we stock larger catfish to speed up the process?
4- Can we stock a smaller pond (1/2 - 3/4 acre)?

Thanks