You're dropping basics in the quest to optimize a filler capability.

Basics: Phlebotomize > TTT combo. You drop PH. Or rather, you do not account for it in a cyclical rotation / repeated sequence of attacks.

You tack it on once at the beginning of the set of attacks (without the HT buff, I might add).

The basic nature of what you're proposing is:

H IDC TTT TTT

At a 2.3 or faster GCD. With a 2.3 GCD, this exact rotation:

(a) will drop the HT debuff for the HT recast
(b) clips 3 ticks of CT if you repeat it, causing the need for a significant DOT-overwrite adjustment
(c) does not include PH which is a significant DPS ability

The basic necessity here is to add the second line:

H IDC TTT TTT
H IDC TTT TTT

After injecting PH, which is a single-handedly better ability than TTT:

HP IDC TTT TTT
HP IDC TTT TTT

Note: this alone increases the PPS of the entire rotation by 2.5%, even if you now drop the HT buff for the last Full Thrust.

At this point you have a few options. Do you inject more filler GCDs (Fracture?) to shove the last TTT chain into the next cycle (note: this will eventually result in the first rotation in Ayvar's thread, or his not-clipping-BFB_CT-adjusted sequence). Do you stack more SS to compress the TTT to fit before the next HT?

In order to achieve the same basic concept with the rotation, you basically need 741 SS, and you still need to figure out how to address the 3-tick of CT clip -- if not in general, then at least once when you BFB.