They should be okay as long as you don't play fruit baskey upset with them again. Once you have them split into groups then they need to stay together from that point. For some reason once they get a pairing type of thing going, they do not accept outsiders well.
My Tuck was the last one of a group left and now he will not go with any of the others and they do not go near him and it is sad. When I move any of them I have to be careful to make sure that Dopey and Dingbat stay together and Sleepy and
DOC are together because they would never accept any of the others.
I am getting 5 new ones also as I am increasing the size of my tanks to 3 12 gallons and 1 25 gallon so I hope to find room for 5 more little ones.
Good luck and send pictures when you can.
Rose