Loved this! Hope we do it again often.
One suggestion, given this was your first go, would be to have someone else prep the next question while the speaker is answering the previous question. It will help with the flow and allow you to make more efficient use of the time.
I've also been in discussions like this where users were asked to preface questions like this: "#question: the question is here"
This or something like it makes it easier for a moderator to distinguish questions from inter chat discussion.
Cant wait to do this again!