I just recently did a quick RaF touchup run with 2 new accounts linked to my main to get myself 3 lv60 druids and a bunch more grantable levels to top off all my main account chars to 60. I have done quite a lot of leveling with and without RaF at times, but in the end, I'm still just a "casual" player (according to my main's guild anyway). So with all those things being qualified, the /played time showing on the druids is 1day,14 hours at 60. I did about 70-80% boosting up to about level47 and then did the RaF tourguide to 58, and then back to boosting until 60 in Stratholme (they were just basic Wow accounts and aren't being kept around after the druids transfer off, otherwise i'd have gone to outland at 58 ).

So compared to my times, it looks like you are going pretty quickly.

I went and did RFD a few times after SM for variation.
I went into Uldamann for about half the instance and couldn't stand it, so i went down to tanaris and boost-quested with a 4th account level 75 helping until i could get into ZF.
I went from ZF to BRD and blackrock spire a few times til 47.