IMO, Your scape looks more suited for Peacocks or small Haps.
As noted, Mbuna would do better with an elevated hardscape. Rocks stacked with peaks halfway up the tank, packed with numerous caves & crevices.
Look at some relatively peaceful male Haps such as Tiawan Reef, Borleyi & Red Empress.
I keep a community of Mbuna, Haps & Peacocks. The Haps are by far my favorites. Although I have some really awsome Mbuna, sooner or later I'm moving them to another tank. Lol.
