Mike Griffin (former NASA director) is scheduled to come to Purdue University in April to speak, and I've got the opportunity to be one of the event photographers. I'm still trying to talk with the venue organizers about where I'll be stationed, but I'm assuming I'll be in the very far back either on the first floor or balcony in these pictures: Loeb Playhouse. I'll be bringing most everything I have (listed below), and I have the option of renting a lens as well. What would you recommend I go with?
18-55mm kit lens
430EX (no flash allowed during the presentation, but I'll use it before/after if possible)
There'll be another photographer who'll be able to cover the entire 18-200mm range (he might change his mind later), so I was thinking of going with a 300 f/2.8 IS for some really close-up shots.