If it were a club and a permenent install I would go with the Octopods or even the Riva's (same light but recesed into the ceiling). The setup will be a bit less because you dont need to supply power to all of the fixtures. The cables that come with the octopods is about 9' I think, then you can get a 15' extension as well. So I would order a few of those as well. Its a 4 or 5 pin connection thats keyed so its only slides in 1 way (both sides are the same, just has a notch so the pins line up correctly), then the collar spins to thread onto the light to lock it in place. They do have fans, but generate barely any heat, but will need a little bit of space behind the fixture (a few inches should be good I would think).
--Kevin