What is the most efficient way to do the dungeon reset as a multiboxer?

Based on the description I assume that the most efficient way would be to:
Make a raid.
Login on another character on 1 of your account and invite it, so 6 characters online from 5 accounts.
Clear dungeon.
Logout with all except for leader and login on the other character.
Pass leader to the other character.
Logout on the last character in dungeon.
Reset with the character that isn't in the dungeon.
Login again with all the characters in the dungeon.

Or for farming easy low lvl dungeons to not have to relog so much:
Leave 1 character outside dungeon.
Logout with all characters in dungeon.
Reset.
Login.