Main account -> RAF 1
Main account -> RAF 2
Main account -> RAF 3
Main account -> RAF 4

I would have to get my friend to boost me and I would have to leave out my RAF 4 account?

I don't suppose that I could leave out my main account and just use the four RAF accounts together with my friend and then Grant levels to my vet char that I leave out on my main account?

I guess if the above is not allowed I would really have a level another set of chars and include the RAF 4 to level that 5th char and leave out one of the other RAFS in order to have all my shammies at 60 through boosting?

Can anyone confirm this?