Get better subs first.

My answer - barely to no.

The ZLX is a good speaker for it's price point but does not get very loud. That sub is not very good and I'm not sure if 3 of them would be sufficient.
Will you be set up next to the dancefloor or will the speakers be a distance away from it? If you're close to the dance floor I would say rent two good subs and make sure the ZLXs are high on speaker stands (the bottom of the speaker should be just under 6 ft. up in the air). If you are going to be farther away you might want a second pair of tops, in addition to the two subs. How the room is set up makes a big difference in how much gear you need.

Thanks, Taipanic.

I'll be set up right next to the dance floor and can set up the tops 6 ft up in the air. I'll look into renting two good subs.

I agree, for the price, the ZLX speakers sound pretty good but they don't get very loud.

You can make the subs more efficient with proper placement. If you can get them up against a wall, they will perform better. As a rule of thumb... Keep your subs within 2 feet of a wall or more than 8 ft away. Anywhere in between will cause quite a bit of cancelation.

DJ Reflex. Thanks for the tip!

What is your goal for this event? Are you trying to make sure the crowd will hear the speeches and the dancefloor will have sufficient volume or are you trying to have the same volumes for the entire venue? If it’s the first you may be fine. If it’s the second you will need a lot more gear.

Thanks, Rebelguy. Yes, at this point without being able to get the equipment I really want, my goal is to have the crowd hear the speeches and have enough volume for the dance floor.