I have a green, bluegill and warmouth in with my bichirs. Never had any issues. The green is by far the most aggressive, but he keeps to his "nest" on the one side of the 125. His aggression is basically to nudge them out of the way. Of course, my bichirs are all 10"+ (ornate, endli, congi, teug, palmas polli), but I did have the same fish in with some smaller 7" senegals and still had no problem.
I would say as long as the tank is big enough, they can be good tank mates. Just don't go with the massive poly species with the smaller sunfish ones. endli/lap would go well with bluegill, but anything around the size of a green, pumpkinseed, etc. should be kept with smaller poly species. But not too small.... like senegals. lol
Looking back at your tank/stock though, your tank isn't really big enough for a sunfish anyway, so I'd steer away.