Looks spot on. Keezus' suggestion might be worth considering. Just take a single wrack, stick it in your deployment zone far away from your army, out of
LOS and just pull off that focus when you think you'll really need it. Reclaimer can claim the souls from the
KE, Zealots, and Choir as they die, giving your extra focus to power your jacks, or to use his magic attack to try and take out some wraiths.
Sevvy has the focus to power those redeemers, and arcing A2A is loads of fun
Not to mention the classic, arcing death sentence, and then dropping some POW14 rockets onto a warcaster's head