Diablo III: Reaper of Souls

So if I were to get into this game again, what would I do now to prepare for the release of crusaders with the expansion? Last I played my barbarian could clear through inferno at monster power 3-4 at a decent clip and I got to paragon level 30 something.

Gold and Materials. Only two things you are strongly recommended to stock on since it's basically a complete gear reset from 60 to 70.
Mind you, gold can no longer be brought from the RMAH.