Just to update you guys, I went to a LFS and found and liked pseudotropheus crabro, took 5 of them...
... plus I was having 4 yellow peacocks and one yellow lab, all juvenile 8 months old.
Now i ended up with these in a 55G:
4 - yellow labs = 2 females + 1 males + 1 juvenile
4 - blue cobalt = at least on male + 3 female
4 - peacocks = 2 males plus 2 not sure yet... all juveniles
5 - seudotropheus crabro - still young, maybe 1 1/2 ...
For now looks like all spirits are calm but I know the cabro once will reach a certain age and size they will probably be a problem... I liked them too much so I couldn't resist...
will mange this later
If you guys have any experience especially with cabro sharing the same aquarium with other species please share.