Let's go with 10AM tomorrow. I'm going to suggest we meet at the mall parking lot as there's much more space there and the Chapters is a bit busier on Saturdays. I can't really stay too long either as I have to give my car some love in the afternoon.
Here's a map to the location I think would be good. Lots of space and no one will care that we're loitering.
....And qwerte, come out anyway! Coffee and car talk is good for the soul.