Help with pond

I am having a small pond put on our place in Conroe. It will be about 60' X 80' and 8' deep. I want to put catfish in it once it fills up (may take a while). I have seen advice given to someone a while back on how to properly start a pond and what to put in. I figure I need some sort of bait fish (perch, fat head minnows) before the catfish go in. I was thinking of cutting down a couple of cedars and putting them in the bottom of the pond. Cement them in standing up in the bottom like Christmas trees for cover. This pond is just clay all around, no structure at all.

Any advise would be appreciated.

BB