csondagar wrote:
On White Balancing, would it be worth taking a photo of a white wall and setting Custom WB on that wall. Or are there any other technique?
If you decide to shoot in RAW, don't bother with white balance at all (use auto or something), you can adjust the white balance later in the RAW processing. If shooting jpg, using a custom wb of a white surface luminated under the stage lighting would be a good idea. You could do the same if you shot in RAW, but I just don't bother with it when I shoot in RAW. I usually carry a white 8.5x11 sheet of paper in my camera bag for custom white balance...
Also, if you haven't shot in RAW before, you might try it before this event to see if it's something you like. It takes a bit more time of post processing to get a final result.