Order more than a couple. Most people have a hard time raising them from small fish to adulthood. I lost my first batch from Rapps. The 2nd batch had all 7 make it into young adulthood, that's when aggression culled the flock.
I don't think there is any other cichlid out there that will really resemble the look of a haitiensis. I guess an istlanum would probably be a smaller substitute. Grammodes would be another. If you want something less seen, maybe H. pantostictus, the blue labridens.
And like Darthodo, I'm planning on moving my haitiensis into a larger tank once I buy myself a house. Either a 125 or a 180.