Peacocks and mbuna

New to the hobby and got too eager to buy fish without knowing what I was doing and the pet store didn’t tell me otherwise. But I have a mixed mbuna and peacock tank (75gal),plenty of hiding for the mbuna and a lot of open space for the peacocks but I was wondering how soon I’d need to get another tank and separate them before aggression starts have about 14 fish all together 7 mbuna and 7 peacocks in there and no sign of aggression yet it’s been about 2 months but I wonna catch it before it starts. Thanks.