How do you think, folks, if the following combination is possible or not in a 50 gal. tank to be located at the office (not for fish breeding)?

3 Labidochromis caeruleus ("electric yellow")
2 pseudotropheus socolofii
and
either
2 cyrtocara moorii
or
2 Sciaenochromis fryeri

Which of these two haps is better for those mbunas?