Fluff questions about Talons of the Emperor

[Demus Ragnok]

First. The Ordo Sinister deployed at Prospero. Do Psy Titans have an advantage against psykers that other Titans do not?

 

Second. The Sisters of Silence command organization. I'm building background detail for a force of about five hundred. How does the cadre rule work at scale.

Would a Knight Centuria in command and then Extruciatus Cadres at a one per three combat unit ratio be correct.

 

I don't have the book and I have mined all I can from the wiki and such.

 

Thanks.