Reply to 200 Guest Private Party - Live Audio Advice?!

Hello everyone,

I've been hired as a DJ for a 200 person party in a space that is about 50ft x 100ft with a approx. 15ft ceiling. I'm mainly a producer so I don't own gear for live sounds (e.g. speakers, microphone, etc.). What I'll be bringing is headphones, laptop, and a Kontrol S4. Basically, I'm trying to get a solid sound setup similar to what they would have in typical clubs (e.g. Amnesia, Space).

As of now, I have placed a rental on a subwoofer (Yorkville LS801P), 2 mid sized speakers (Yorkville NX55's I believe), and 2 monitors.

So my questions are:

How should the speakers/subwoofer be placed? Should they create an equilateral triangle with the dancefloor like a studio? Where should the subwoofer be (I've had problems with putting the subwoofer near the DJ booth because it makes it extremely difficult to hear)?

Any tips concerning that actual sound? Is there some sort of guideline I should be following for making sure everything is balanced (e.g. EQing)?

Possibly more questions to come, thanks!

P.S. My S4 will be going through a mixer before the speakers.