First Wedding Question

[artoledo]

I guess this post is a bit procrastinated but today @ 5PM I am going to be shooting my friends wedding. I am going to be taking pics of the whole ordeal. From his wife getting ready to the reception. My question is should I use any gels? Or is my SB-900 sufficient. Since its getting close I feel a bit nervous because I want to do a good job, but at the same time I am confident enough in my skills to do the job right. Any suggestions? Thanks! By the way, I will be using my 18-105 and my 50mm for this wedding. I know I should be using a much better zoom lens but money is pretty tight since buying my wife a D60. Thanks again!