I completely missed the part about having two cameras. I would not recommend a two
camera shoot where lens choice is restricted. Lighting for 2 cameras is one consideration, but without being able to make lens choices, more often than not both cameras will have the same shot, which is kinda silly. Also, if you are doing overs, as Paul pointed out, you'd have one hell of a time getting the cameras out of each other's shots.
For example, I AC for a TV show that shoots 2 camera's all the time. While we usually light for primarily camera A and slot camera B into place. Our DP has many years experience doing TV, and knows how to light so that the 2nd camera has shots. He usually doesn't have to adjust too much. Even when doing overs, the cross-keys are usually already set and just adjusted from their position in the master.
Operator A: "I've got the wide, <B op> you go in for the swingles.*"
Swingles: Shooting singles on multiple characters back and forth (say on a couch, or at a bar).
Or something like this:
Operator A: "I'm on the ECU's. <B Op>, you grab the 2 shot."
And so on.
Bear in mind though that we're shooting a "non-fiction" crime recreation show with a very cutty style - lots of what we get with 2 cameras is just to give coverage to the editors for all the flash and bang and such. Where 2 cameras really shines on that show is when we need to split teams in order to make our day.
The lounge is at an apartment building and much brighter than a normal bar or dance club. We will fake it and dress the place as a local club. Thankfully digital does not have the same lighting requirements as film.
I would be worried then about it being too bright overall. You'll want darkness in the frame to see that it is a night club and not some apartment building common room. You may not need as large of instruments to get there, but you have the challenge of creating a dynamic shot with good shadow detail, good highlight detail along with portions of the frame that should be almost blown out (practical light sources) and almost completely crunched (the really darks, the stuff that sells the word night in night club) and doing it within the relatively restricted latitude of your sensor (since we are making the film comparison).
While you are dressing it like a club, remember to light it like a club. The dance floor is bright, colorful, and full of movement. Do you know anyone with DJ lighting gear? The bar is a little brighter than the rest of the space, but mostly as a side effect of decorative lighting combined with working light for the barkeeps. The corners are dark, where the beautiful people go to make out and the not so beautiful snort coke off of their house key. And so on.

Going back to the dance floor, the light should dance along with the players. Ever notice that there is some characteristic about the combination of dance floor lighting and rhythmic movement that can make someone seem far more attractive than they actually are?