Is this gear enough for a Wedding

Everyone else mentioned the flash and the CF's but I'd be more concerned for the backup of the primary lens. If that 17-50 goes west during the prep shots, the shortest focal length you have for groups is the 70mm end of the long tele's.

I'd say hire a 17-55 or a 24-70 for the 2nd camera, we shoot with the 24-70 on the 2nd, which allows a little tighter portrait shot than my std lens, as well as being there 'in case'.

Large aperture wide prime? (for low light situations)
Sigma 30/1.4, 24L, 35L, etc...

Who's your assistant?

Meaty0 wrote in post #4186098
Who's your assistant?

I didn't know they were compulsary, but they're especially handy for people without much experience.

*Bill wrote in post #4179761
As for bodies and lenses... YES. You have this covered. However, I would recommend a second speedlight, and some more CF Cards.

Geeze How many cards do you need, I carry and 1-2GB, 1-1GB, and 2-512MB and I get along fine. Many weddings...
Madison

madisonoles wrote in post #4186146
Geeze How many cards do you need, I carry and 1-2GB, 1-1GB, and 2-512MB and I get along fine. Many weddings...
Madison

Enough to get the job done... twice.

madisonoles wrote in post #4186146
Geeze How many cards do you need, I carry and 1-2GB, 1-1GB, and 2-512MB and I get along fine. Many weddings...
Madison

I need 8-10GB (shooting RAW on 20D+30D), I carry probably twice that... just in case.