Introducing new fish 5-6 years down the road if he got rid of them when they started to get a little large would pose a bigger risk as far as the other bigger fish accepting them in to the community/lifestyle. Grow them all out together while they are young and the chances are far greater of them getting along.. of course it very may well be a bad turnout either way given that ca/sa are unpredictable in their personalities.
man I envy you in that case! I'd see if it was possible to check out the hatchery if it were me ! =D Only time I go through that area is when we're passing through to Matthews, NC, just outside of Charlotte where my wife's grandparents are at.
Yeah I PM'd him with the tank size and what not. See what he can come up with. I might be able to swing by his place Monday morning on the way back to Charlotte. I need to get some 1/2 pottery bowls or something. I do not have much hiding areas in the tank right now if I were to purchase all this stuff. hehe