> I really can't see this turning out well for me. It's easy for me to smirk and laugh, and for me to end up looking like the asshole. I'd be playing his game and losing.

Your style doesn't jive with this sort of aggressive posturing. Thats fair.

I would advise that you find a strategy and voice that does work for you. You need to have the things you're going to say "loaded up". Spend the first week taking time after the meeting taking an hour to write down all the things you should have said to "disarm" this person. It's less about the delivery and more that you have a message to send ready.