Okay, so Dice Dojo got back to me and the good news is they don't charge anything, they have over a dozen tables, they're open til midnight, they don't need confirmed RSVP's.
The bad news is that Friday night is pretty packed, so if we're looking at the 29-30 the 30th will be better.
So if we decide to do this on the 30th, I have a place that can house us, but it's in the city. V1olentray, street parking is not that bad by Dice Dojo on Saturdays, I was just there, you could get there via public trans, but it would involve riding Metra and then switching to CTA.
If we want to do it in the burbs, I don't know of a place with the space that is as convenient.
Otherwise one of us could host, but I know I don't have the space to host a significant amount of people.