I do not see a 60 long tank in the library to give us dimensions, are you able to provide them? I know some 65G tanks are 36" x 18", but I assume a 60 long is at least 48" long?
If this is a 48" long tank and you want both males and females, then you may already have too many species in the tank and I would not add Acei. BTW, it is Pseudotropheus Acei, not C. Acei if you are referring to the mbuna.
Desi and DMWave are giving you good advice. Mbuna males kept with only one female of their own species will likely kill the female. If they are 2+ inches, it will set in any day now. So if your tank is 48" x 12", choose 3 species and add females. Or if your tank is 48" x 18" you can probably choose 4 species and add females.