I used Krix in my build, same neuphonix and epicentrix but I had the dynamix for my rear pairs and the volcanix sub. Running off marantz power.
I love them and can't fault them at all.
I think you will be very happy with your purchase.
If it gives you confidence, Krix make speakers for thousands of commercial theaters worldwide including all of the best cinemas in AUS - so that kind of speaker know-how can only translate into fantastic home speakers.
Where in AUS are you?