Heavy Thrust - Phlebotomize - Impulse Drive - Disembowel - Chaos Thrust
x2 [True Strike - Vorpal Thrust - Full Thrust]
Heavy Thrust - Phlebotomize
[True Strike - Vorpal Thrust - Full Thrust]

Repeat. You'll need to add jumps and buffs between the combos but that's pretty much the perfect rotation. It's not as complicated like you make it seem. I wouldn't suggest taking Fracture because it's not really that good. Much better to run around with Internal Release, Bloodbath, Second Wind, Featherfoot and Mercy Stroke.