I would:

Acct1 --> Acct3

Acct2 --> Acct4 --> Acct5

Use the DK (on Acct2) to boost new toons on Acct1+Acct3 and Acct4+Acct5.


This will give you a crapload of characters on both account 1, 3, 4, and 5.
Accunt 5 can grant levels to account 4.
account 4 can grant levels (included those granted from 5) to account 2.
account 3 can grant levels to account 1.

repeat several times.
you can also make a new team. make sure account 1 and 3 are always in the same party and accounts 2, 4, and 5 are somehow in the same party. or... 1, 2, 3, 4, 5 are in the party and you'll have no issues.

the only problen you'll probably get is that you'll run out of room for characters on accounts 1 and 2.


also, i would use the dk. its a lot easier to run through an instance, grab 40 mobs to bring back to the group, and kill all at once than having everyone on follow while you kill things one at a time.