Oh, and sorry Esch, I forgot to answer your question on rotation.
The goal is to use a rotation largely on single rune costs. You use DS on any FU pairs that aren't converted, and otherwise spam HS like your life depends on it (or BB in certain situations, or pestilence to re-up diseases). This also leaves plenty of room for Rune Tap and Mark of Blood casts. Ideally you'd apply IT/PS once at the start of the fight and not have to use them again, RS used as sharply as possible (I even bound it to BB for when I was doing aoe pops). DCs are ok to dump one in a gap, only if your RP gets close to 100, I use glyph of DS so letting my pool stay high buffs that dmg and healing. With the heavy use of single runes this rolls a lot of RP in actually.