tedster - 9:14 pm on Feb 23, 2011 (gmt 0)

I think the current sitemap limit is 50,000 URLs, so you're only a little over half way there. You might go with multiple sitemaps and a sitemap index file if that's easier for you to manage - but there's no inherent advantage in crawling or indexing.

We've got a forum devoted to Sitemaps [webmasterworld.com], robots.txt and met tags. If you get into some issue or other with your sitemap, try posting in there.