Im runnin the pally/4 shaman combo and have hit pretty much all the instances so far with the exception of anything after BRD up until the expansion and that simply because i was super undergeared. I did ramps and BF from 62-63 and once i hit 64 i tore apart Slave Pens. Its way easier than the two before it. Some of the bosses are difficult, but once you figure it out it becomes trivial again. Just give it a shot. Once I got some decent gear from the first outland areas it got easy enough.