With lots of Dithers ( target fish to distract cichlids from each other to help spred out aggression) and lots of Decorations and hideing spots you could do it i would add alot more cichlids to more can be better you wan't to spred out aggression with just those cichlids in the tank i would say they would fight alot but with lots of other cichlids in there it could work better
Also i would go for only 1 pair of cichlids per species Max pairs of cichlids are usually much more aggressive then normal Mainly when breeding