And +1 to go pro. Be sure to check out JBL and Meyer's sound.
Also, consider what the goal is. If you want a club experience you should do multiple speaker arrays instead of 2, distributed and time delayed from a central location. That will give even out the sound quality so that at the back of the house sounds as good as at the front, without needing to increase the volume of the fronts.
That's how to do it well.