I'm currently setting up a 90 gallon 48x18x24. I have a couple hundred pounds of limestone to make a lot of caves and hiding places with. I have a 40 gallon fluidize sump with k1 and and some misc. media running at 800 gph, also two HOB filters with Pothos and lucky bamboo inside them. I would like to stock the tank with dwarf Mbuna. This is what I was thinking 2 Male 15 Female Pseudotropheus Flavus, 2 Male 15 Female Pseudotropheus Demasoni, and 1 Male 4 Female Iodotropheus Sprengerae (Rusty), and 1 Male 4 Female Labeotropheus Trewavasae. Is this too many fish? Will I regret the aggression and end up wasting a lot of money? I really like the look of all these fish, but also want to create a healthy environment..