White Plague Puns

I’m only on Day 26 on my current run, but I have almost every weapon and suit in the game with the only exceptions being Faint Aroma and Twilight(obviously not counting Paradise Lost), I have plenty of level 5 employees, and I’ve >!suppressed all of the upper layer cores, but haven’t gotten the chance to deal with the others yet!<

Plague Doctor appeared on my Abnormality selection screen and he’s the only non-tool Abnormality I need left for 100% Abnormality Dissolution, but I’m not entirely sure if I’m ready for it or not yet.

Is there anything specific I should do before I take him on so I know if I’m prepared or not?

So, I was wondering a few things about the good ole doc, since I managed to get him in my first playthrough and ended up resetting before the clock hit noon.

If I were to execute the 11 people turned into ‘Apostles’ before the last person goes in and starts the clock, would that prevent any apostles from spawning?

And after the apostles all spawn, does the White Knight break out of containment? Or do they only have the apostles do the work until an employee ends up messing up and letting him out after he’s fully transformed?