Placidochromis Species Tank

In an effort to achieve a Malawi tank with minimal aggression I have decided to try a 6ft 150g filled with only two different genera. Placidochromis and Labidochromis Caeruleus. I'd like to hear of your experiences with the following species in terms of aggression.
White Lips
Sapphire
Galo Reef
Giseli
Electra
Blue Otter
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White Lips
Sapphire
Galo Reef
Giseli
Electra
Blue Otter
Sent from my SM-G960W using Tapatalk