well when I read the part where you said your a drg I stopped there as I have experience as one start

blood bath> internal release> Heavy thrust (Flank) > leg sweep > Phlebotomize > Battle Litany > Impulse drive > Dragonfire Dive > Disenbowl > Blood of the dragon > Chaos Thrust (Rear) > jump > do what ever rng proc came up Fang and Claw (Flank) or Wheeling thrust (Rear) > Geirskogul > True Thrust > Vorpal Thrust > Leg Sweep > Full thrust.

Then repeat but always second time reverse the 3 combo so instead of the impulse drive > Disenbowl > Chaos Thrust go True Thrust > Vorpal Thrust > Full Thrust every second time using all off gcds whenever up and geirskogul whenever your blood of dragon is around 12 seconds then 12 secs before off cd and your re starting rotation then use it again and reactivate blood of the dragon before before 3rd move on combo.