Pick 3 groups I think would work just fine
I would say 4 of:
Labs
Rusties
Astatotilapia latifasciata 1M:3F
or 3 of one of the smaller haps 1M:2F
Copadichromis (smaller)
Peacocks
Otopharynx
Tramitichromis
The mbuna are really the issue - you need calmer fish to have the haps happy.
Good Luck