Im encouragin breeding, because its interesting, and in that size tnak, theese little 1.5 inch fish will have a ball in there. Plus, Multi's are in high demand, but little supply, so he could get money off them. IO have only seen there here once an dhtey cost like 12 dollars a fish. With theese fish, you dont need a spare fry tank, as soon as they are welcome, they will swim away and find there own shell! I also think tehy are nuclear famalies ( i may be wrong, i havent read up on them in a while =]) . You could also keep some Kribensis Cichlids int here if you do not wish to keep Multi's, or you could go south american with some borelli's Apistogramma, Cockatoo Apistogramma, ect.
Soaup: Saying that a 55 g minnimum for cichlids is most definatley a lie. The only fish i would recommend at a 55g minnimum are:
Mbuna
Oscars
Blood Parrots
Haps
Flower Horns
^ must i really go on?