I would agree with Nemo - and also wonder why you would want four cardinals unless breeding, they are rather boring at the best of times. I would also have concern about the six line wrasse, they have been know to bully others. I would be looking at a wrasse, maybe a fairy
Thanks guys. I only put 4 for the pajama cardinal because I thought they where more of a schooling fish. Maybe two is a better number. I will also look into the fairy wrasse, they do look really cool, but it depends what I can find down at my LFS.