Tables in web pages are formatted differently than spreadsheets, and typically there is at the very least a lot of clean up and formatting work to do.
There really isn't any way to transfer stats although some outside stats services such as activemeter, statcounter and sitemeter allow you to enter a starting number if you use their service.
The XML file can be imported into a wordpress.ORG blog (self-hosted) and there are other blogging platforms that can import them as well, but I don't know which ones. I think blogger has something.
If you have any concerns about your blog getting suspended or deleted, then I would suggest you export every couple days or so (if you make posts often). Better to do that than have to recreate a bunch of posts.