Big Site About To Go Live

Hi,

I’m about to launch a website that has a large number of pages, around 100,000+. I have never launched a site of this size before and I’m not sure how Google will react. Will Google index everything early on or just start with a few pages and slowly build up. Are we going to need decent link popularity to get all the pages indexed? The linking structure of the site is pretty good, using multiple category structures and sitemaps.

Jake