It's usually reckoned that a steady stream of new stuff is better than adding large amounts at one time - but I've seen any evidence to support that Google has a 'problem' with a large batch.

Unless of course the batch swamped what went bfore, in which case there's a risk the site will be seen as 'new' and 'sandbox' theories come into play.

Google may get slight indigestion at large amounts, but with the aid of good navigation and site map, I doubt it will e long term.

I know from experience that when rebuilding a site, incremental is much better than 'all at once'.