- This may get torn to shreds by others here but this is my opinion
I have been using a mobile k10, kw122, kw153, ksub, kw181 setups for a while now, both for band setups and for dj setups. I am not aware of the amount of patrons you have in that space. To me it seems you already have enough rig for that room. In my opinion if the gain structure was set correctly you should have enough.
the DJ mixer running in to the mackie mixer. It should really only be set at a master volume of around 2 or 3 and not 8 -10(max). Unlike what most dj’s would think/do. If the Dj's can not comply with that, I would use the pad on the Mackie mixer and another inline pad so you can get a decent (lower) level going into the mackie mixer, instead of a super hot clipping signal. But ideally it would be better to have the dj mixer master set to a low setting. Having a nice Unity signal going into the Mackie channel fader would be my start.
I would couple the 2 earthquake subs near the band stage. feed them a signal of 100 hz to 35 hz ( maybe even bump that up to as high as 40 hz depending on the djs).
I would then try and angle the k10's near the band stage pointing down a little more. Make sure they are on the k10 setting is "ext Sub" and have the gain around 12 - 1 o’clock . this could be raised as long as its below clipping.
I would also have the front led light setting to show Clipping light.
I would then Use the other 2 k10's from the dj area (with the same setting as your mains) pole mounted to the Ksubs as the monitor rig for the dj. Strike them and use them as monitor for the band when needed. A good monitor rig May help keep the dj in the correct levels instead of constantly pushing it higher and higher.
If you feel the 2 hanging K10's are not enough sound. I would hang the other 2 K10s in front of the band stage horizontally (this way “ –“ and Not this way “ | “ ) Like a monitor / fold back position near the center of the band stage
You have a lot of hard surfaces in that space. I would also try and get some acoustical treatment on the walls and in the corners of the room. The floor would be nice as well but I don’t see that happening on a dance floor that needs to be cleaned.
I would also get a eq for the system. Or even better a drive rack 260 with brick wall limiter.
Another alternative to your current speaker setup would be to have the subs on each side of the band stage and a kw153 on top of each sub. use the k10's as monitor duty where needed.