Currently I am on a low pop server (Magtheridon-Horde)

I amlooking at joining a high pop server, such as Sargeras or Illidan.
Since transferring a team or two is expensive, I am considering RAFing 5x new accounts.

I don't want to start over with nothing, so I have a few questions.

1. My current account has 8 wow licenses, can I move 5 of them to a second battle net so I could then add 5x New Licenses and RAF them?

2. If you transfer a toon/account to a new battle net account, does it get all the mount/achievements/pets/heirlooms? I remember when battle net account bound items first came onto the scene, this was the case, but people abused it and they nerfed it?

3. Anyone have experience with a High pop server? I've always been on a low or medium server. I am mainly looking for a healthy auction house and world PvP scene. Is a high pop server worth it?


4. Any active multi-boxing guilds still around?