I aware of that there is no RAF bonus past 60. Im also aware of that the exp required to gain 60-70 have been lowered.

Now my questions is.

WIll it be worth dualing my boomkins from 60-80? or Should I stick with 1 of them or...

Dual another pair? or(last one) Play Dk in wotlk to 60 then give lvls to my pala and dual those two to 80?

Currently my highest characters are my lvl 50 boomkins I got no money to spend on other chars and I cant really help my new dual team if I make one.