The trop will catch up to the ornate pretty quickly. I'd avoid the cichlids unless you don't mind missing a few once the gar gets large enough. My 20 inchers can easily down large firemouth cichlids. The trops are only a couple of years old.
mine lived with large ornates and endlicheri... not its with a white saum that likes to fin nip...not sure on fire mouths but i had good luck with frontosa...
mine lived with large ornates and endlicheri... not its with a white saum that likes to fin nip...not sure on fire mouths but i had good luck with frontosa...