LMB, SMB, cats and sunfish. I don't care if the sunfish get eaten and the cats and bass would be too big for him to eat.
I feed my fish daily, and occasionally miss a day when work keeps me out for a long time. What I mean by sparingly is that I simply don't powerfeed. I give a combo of Hikari pellets and krill and I catch and chop up trout to feed them 'trout chunks' which the fish absolutely adore. They also get live feeders on a rare occasion, normally wild caught mollies, minnows or shiners. Feeders are always quarantined, too. Don't let the low post count fool ya, I'm not a noob.

I know you guys are just looking out for the well being of the prospective gar.
edit- also, my cats don't bother anything, they're very even tempered. The sunnies don't go after anything other than each other, and since my LMB found out that other big fish bite back (the blue cat), he's stopped actually harassing the other fish, he'll just run them off at times.