I doubt 5 rogues are valid setup for DB, but you can always setup them the right way, and level 3 rogues+tank+healer, then on the tank and healer accounts grant levels from the 3x rogues accounts, and rise 2 new rogues to 85.
I don't remember who is linked to who ... any way to know that ?
I can't find how to know who recruited who and who was recruited ...