Many thanks for you guys help, after reading these threads and and talking with a few folks we have decided to stock Tilapia rather than mudbugs because we are getting more bang for our buck. As someone pointed out we should have a pretty decent population of crawfish since our lake was formed by damming an existing creek.
I'll keep you posted.......

My biggest fear is dying and my wife selling all of my fishing tackle for what I told her I paid for it.