Glad to be of help. I hope it will go well, you've done a hellava lot of research and thought about it lots.

Oh I don't think the AR/HR thing would be suitable for your presentation, just when I was reading through your post I went "hang this reminds me of the stuff that Matthew and Karen were talking about" so though you might be interested for future reference (and I don't know which email address you are using at the moment :)