The move is complete...
Looks like the move from Blogger to WordPress is mostly done. I just have to look for any remaining issues and broken links now. If you come across anything like that, please leave a comment and let me know. :)
Interestingly, even though I had never looked at the WordPress template system until this weekend, I had structured my Blogger template in almost the same way as WordPress does, with separate pieces for the header, footer, content area, sidebars etc. So, migrating my existing template to WordPress was a pretty smooth process. The majority of my time was spent looking over the existing code, line by line, and rewriting it in a cleaner way.
All in all, I'm happy with the way the site is set up now. It's going to make things much easier to manage without remnants of four year old code.