Hmm. I read the Warrior Acolytes entry to say you can get 3 special weapons total, which would void the second-to last build. I'm curious why you're interpreting it to mean 3 of each special weapon.

A. Pretty clear to me that it's illegal, though the rule is terribly written.

B. You guys need to start thinking outside the box, ie the Chimera:

Coteaz
5 Grey Knights
5 Grey Knights, 1 w/ Incinerator
(3 Servitors w/ Multimelta) x 56

Yep, 168 Servitors. Sure, half of them mindlock every turn. That's still 84 multimelta shots, or 42 multimelta hits, per turn. You could switch some out for heavy bolters if it tickles your fancy.

You probably wanna go for the table in a KP mission.