i have 3 accounts , A B C ( C has a 80 shaman on it )

i was thinking the fun of having a 3 shaman team , new to this whole RAF thing i was wondering if it would be worth it to RAF
A - B with 2 throw away accounts and just level those 4 and not use C to boost.

and how does RAF work now with merged battlenet accounts before i would just log in on C's account management and send the invite that way.