Definitely get swiftcast from THM at 26. You can put getting ACN to 34 for Eye for an eye on hold for a bit, its the SCH equivalent to stoneskin from WHM and not as effective as it sounds unless lots of hits happen swiftly to the tank. I.E. trash pulls or over pulls, in those cases its far and away better than Stoneskin, but Stoneskin is much more useful for starting bosses or small packs.