Kenski wrote in post #5639506
Ahhhh, nevermind.... I know what your saying now... Those battery packs are expensive though, aren't they?
Yea, about $150 each, but worth it when you change batteries three times less during a wedding/event... if at all. 
mikediamo wrote in post #5639521
there was a wireless setup using v2 on the list i figured id use that setup 2 of them and then down the road after ive made some money getting pocket wizards. what did u think of the wirelss setup
Yea, didn't see that... Since you're going to be in a room, I'd think the Cactus would work fine. Just beware that many people have them fail on them. Ultimately, you may find yourself back on wires and pissed at failed equipment. For something like this, I wouldn't rely on them. PW/etc is the way to go, but I realize the added expense is out of the question. I use 4 PW's with 3 580 II's. It's expensive, but probably the most reliable/powerful system I could expect in such a small mobile package. For small jobs like this, I have the Photogenic dual shoot-through brolly kit.