Help requested - I'm in a bit of an annoying pickle.

[Toonarmy]

I'm hoping to get opinions from the community on how to deal with this.

Background
I have 5 accounts (acct1, acct2, acct3, acct4, acct5).

Acct1 - 1x80 Pally
Acct2 - 1x80 Shammy
Acct3 - 1x80 Shammy & 1x48 Shammy
Acct4 - 1x80 Shammy
Acct5 - 1x80 Shammy

Initially I had planned to do PVE (hence the Pally/Shammy split). However I have since become hooked on BG's and have very little interest in doing PVE in the foreseeable future.

Challenge
What is the easiest/quickest/least boring method to end up with a 5 shammy team at 80?

I can think of a few of options. Critique's and suggestions are more than welcome.
1. Instance Boost the "48" using the technique's discussed elsewhere on this site.
2. RAF a new account (acct6) to 60 tied to Acct3 and then use the "grantable" levels to jump 48 to 60
3. Just quest 48 to 60 normally with "help" from a pally/shammy toons.

At any rate I hope that the community can assist with suggestions. Thanks in advance.