Does the sort of green one look like this?
He also could be more brownish and have a slight green sheen. If either of those is the case it's likely that its a C. aeneus which is also likely what the albino is. If so you have the makings of a school on your hands. You could get some bronze guys to go with them in the main tank or new tank and you could still tell most of them apart.
The peppered and false julii probably school together because they look most alike out of the options. It's more of a necessity thing rather than an I like you you're my buddy thing.
You certainly can wait to do any rearranging of the fish until you set up all the new tanks--as long as the water is clean and they're not being picked on by other tank mates they won't die due to stress in the mean time.