Re: I need tips for a wedding gig

If you're shooting all day I would grab 3 x 16GB cards. Fast ones like Sandisk Extreme Pro's.
If you're not shooting reception 2 x 16GB should do it. I personally would always prefer 2 smaller cards than one big car, for flexibility, but it's worth keeping in mind that you then have twice as many cards to potentially lose and change overs need to be more timely. The reason I still go with 2 smaller ones is because I've never lost a card, and if I did, I'd rather lose one 16GB card with HALF my footage on it, than one 32GB card with ALL my footage on it :)

All the best. The rest of your set up sounds good.

Joel