I'm going to attempt to run 5 Worgens in cata, without RAF. I wonder how long I last though, since I usually hate the leveling process. Hopefully with all the new content, I won't feel bored as quickly.

Basically it amounts to what you have more of time and patience, or money. I usually run out of patience before I run out of money, so I make a vanilla account or 2, boost em up and xfer to my main account. Plus its a great way to get the rocket mounts....

Depending on how many toons you have now, and want to level up, you could either buy 3 new accounts, and xfer your existing toons from those 3 accts over, or you could just buy 2 new accounts, boost 4 at a time, and xfer half to the pre existing accounts. Or start completely over. There are a ton of choices.