Not enough room for all of those guys. They would get along when small but when the fish get bigger you could only have 1 and a 75gl would be much better for an adult than a 55 would.
how about salvini...they typically don't grow as large as the species you mentioned but are very colorful. you could do a breeding pair in that size tank.
You could get 6 Jacks (juvies) then when 2 or more pair off pick your favorite pair and they could live in the 55 forever... And Breed Much better than just one