That's true I guess, but it comes from having those bad experiences. Very few people will have the good experiences burned into their minds to the extent that they'll share them with others (thank you again to all of you who have done just that!) but the bad ones are spread around as a cautionary tale, a warning that conservatism is sometimes equated with safety for a reason. I guess it really comes down to watching what's in front of you and using common sense, which is difficult when you don't have a lot of experience. Hence the beauty of these forums, which allow us to call on a pool of prior experience before we try new things.
When I get them they'll be small still so I'll be growing them out. Definitely getting a bunch and will sell those that don't pair up - I'll play it by ear when the time comes, but will plan around having just the one pair since I am expecting to have and keep babies until they're big enough to sell to the local stores, so I don't want to tax my bioload by having lots of juveniles. I'll also see how stressed the parents get and make sure they don't eat the fry - it's great that they don't tend to tear each other apart, but I also don't want to see shy fish getting rid of their eggs because they're unsure of their security. I will probably try some rainbows with them when I get rid of the extra fish, because I'd like some movement up top and I've had great success keeping dithers in with cichlids. If two pairs seem to strike a balance I would definitely like to keep more.