my wife is allergic to catfish..so i ruled them out early..
i've been considering trout, i know my temps would support them, it's just a matter of finding them at the right time and price..

cherry shrimp look fairly easy to breed as well

lots of my stuff right now is experimentation with different species for supplemental food for my grow out fish..
from my first batch of 25yp, i think i have 10 or so left, lost some to stress related, a couple jumpers and some were stolen right from my back yard.. it was way to warm in a small system outside in the summer, but since bringing it all indoors last fall, i've had consistent growth.. (yp sells for about $15/lb here)
my yp and bg both love minnows, crickets, worms, crays.. just about anything that moves and fits in their mouths..
i was worried that having all the live food might make them more picky, but they still eat pellets as well as all the treats