all you need to do is make a Deathknight with the name you want level it to 58
and pay for a run if bindings or eye don't drop delete and reroll the character.
even though it's the same name the raid lock out won't be the same.
takes around two hours to clear the DK starting zone.
you won't have to worry about attunement because there isn't one anymore.
useful tools for finding people who will run you are
OQ (add on) https://solidice.com/oqueue/
and openraid.us (website)