So things have changed a bit on the account front since I last multiboxed. And things have only gotten easier! For signing in I can link all my accounts with my e-mail address on battle.net and I can now use the refer-a-friend feature to give my 4 lowbies 300% xp bonus!
So I logged into my account and referred myself. I made a new account and thanks to being a customer on Shattered Crystal getting 4 new account codes and 4 new bc codes was almost instant. Sadly as now I am alliance if I want to level up shaman I will need TBC on these accounts as well.
So Main refers A refers B refers C refers D. With all my accounts upgraded and ready to go I just need to setup my WoW installation as well as my macros and keyclone.