The system calls for a 10x - 20x BB stack. I thought that went without saying...

I will argue that being called isn't important if there are enough limpers. What is important is having a short enough stack such that calling isn't hugely -EV. This puts the limpers or initial raiser in a difficult spot. Also getting a free/cheap peek from your blinds is a big bonus.

Also, consider that the system has a very low rake exposure. Particularly if PP has a "no flop no drop" rule (need to investigate this.)