I boost my modules too when I am looking for that much gain. Actually, I have been boosting my amps since the late 80's.
I might pick up another KH3 at some point. I liked the one that I had but with a JF Brahma, JF Mr Scary, Gigmods Ultra XL, and a SL+, I just felt like I was (still am) covering too much of the same ground. It is some pretty sweet sounding ground though!