Really think about your goals (both short and long term). A little longer in the pre planning makes it much better in the long run.
I have stocked perch every year, but only caught one through the ice this year. I then caught a 19 inch bass and figured out where all of my perch went. In hind sight I wish I had done a different plan than what i did. I rushed in and am now working on correcting it.
Personally, I would stay away from the Crappie. I love to fish for them, but they will overtake the pond and you will have to start over in a few years. We have a 10 acre pond in our neighborhood and the crappie have taken over it since they spawn much earlier than anything else and then out eat the later spawners.