Yeah, vocals are tough! It's all really hard, but I think vocals and drums are the hardest. I'm terrible with effects, I never really know what I'm doing. Do you have the Waves Ren Comp? There's a vocal preset that you could start with. I think the settings are attack: 5ms, release 50ms, ratio: 2.5:1 (though you might wanna raise that on a song like this, I would think on these kinds of songs they probably compress it a lot, probably at least 4:1 or even more), and then lower the threshold till your getting around 3 to 6db of reduction, then raise the gain to make up for it. On these kinds a songs, sometimes a little distortion on the vocal seems to work, too.
I don't know though, I've never really done a tune like this, maybe someone else can help out here.
Good luck,
Macle