That must feel like a daunting task. I totally understand what you mean about the uncertainty. It's interesting how others seem to have more confidence in us than we do in ourselves sometimes. I remember a long time ago I was asked to record the video of a friends wedding. I had it all set up and everything was great. Then I get home and the video looks fantastic, but there was zero sound! I don't think I have ever fully recovered from that. You will do great though! :)