Nice spec. Nothing new, but I was surprised at how fast it moves and how long you can keep it going. Probably want to also focus on attack speed. Also, I think your survivability is a bit low, you get very close to death too often and even die once.
In any case, I highly doubt you can do 70mil exp/hour even with this very expensive gear and leoric signet just by watching your kill speed (and the math confirms 60mil/hour), but with enough gear to not die and kill elites faster can probably get not a whole lot less.
With leoric's signet and enough additional expensive gear to compensate for the DPS loss of my SoJ I'd get 70mil/hour (currently getting 60mil/hour as a 30% signet and the gear to compensate for the DPS loss is quite expensive and I don't even play that much to justify paying so much for this boost), so you definitely still have a way to go to match top barbs which can maybe even do more than me.