Decide each fight whether to use Sensational Performance. It is optional, and using it locks your unit out of targeting an enemy it was engaged with at the start of the turn, or one another of your units has already attacked this phase. On a fresh charge into a new target you take the bonus every time. When you need to finish the unit you were already fighting, decline it and swing with your normal profile.
Fight your cheap units first. Because Sensational Performance fences off any target another unit has already attacked, activating your Flawless Blades first denies that target to everyone else. Let your Tormentors finish the weakened chaff, then let the Flawless Blades pick freely from what is left.
Use Honour is for Fools on the character, not the squad. Spectacle of Slaughter's 1 CP stratagem gives your unit's melee attacks [PRECISION], and combined with Fights First you can kill an enemy character before it swings at all. That is the highest-value single action available to this army, and it is worth holding a command point for.
Beat screens with Single-minded Strike. For 1 CP your Flawless Blades can move through models, excluding Monsters and Vehicles, when they start a charge. An opponent who has read the rest of this page will put a cheap unit in front of your best one, and this is the answer.
Let a cheap Daemon unit carry Euphoric Inspiration. Court of the Phoenician's 1 CP stratagem is an aura off an Emperor's Children Daemon unit that lets friendly units within 6 inches re-roll Charge rolls. It buffs the units around the daemon rather than the daemon itself, so one inexpensive Daemon model placed centrally can re-roll charges for the whole advancing line, which is exactly what a detachment gated on charging needs.