With my 4 Shaman I ran them through WC at 10-20 and then SM 20-40 with my 70 lock. Took 1 weekend 38 hours /played to get them to 40. SM Library 20-34 and then SM Cath to 40. Then started boosting ZF, doing 12 minute runs to 47. Now I'm debating on what to do next.