Changed the SA and SQ sections as discussed above. Also went with no treasure, alignment same as false K, and "ganglion" for the group.
I think you're right about the CR of the false K depending on the number of Subsumed Minds. We should probably keep track of these comments on the false K template, too, for when Shade gets back.
I do think Subsumed Minds need their own CR, though, since they can be encountered separately. The thing is, unless the false K channels a high-level SLA through them, they're not very challenging. There are a few undead kind of like that we did (gem eyes, I think), which I'll take a look at.