That looks like it would work pretty well for a small venue, the speakers have good efficiency, power handling and max SPL. The subwoofers should provide good bass reinforcement in a club atmosphere. The amps are very good as they provide robust equalization and crossover functions.

I have always liked the sound of Allan and Heath mixers and they are robust, as are Crown amps.

As a group however we are not terribly knowledgeable when it comes to sound reinforcement. We are focused on sound reproduction in the home. I don't have any specific suggestion of websites or forums for you to visit however - but I am sure they are out there.