I haven't been able to find any videos of how to properly power-level alts using RaF so I made a few videos of SM-Cath, ZF, and Scholomance.
In these videos, you don't have to move the alts so it's ideal for multi-boxing.
My fastest 1-60 played time is 10 hours, but my current alts are at lvl 54 with 6 hours played time so I imagine they'll be 60 in around 8 hours total.
RaF Video Playlist
Thanks for watching!