Congratulations! If you're not using the SemPress theme, you might also enjoy https://github.com/pfefferle/wordpress-uf2 which will do some of the mf2 material (as best it can) without remarking up your theme by hand. I've used a handful of WP themes with IndieWeb and not had problems sending/receiving webmentions (to my knowledge) or using other indiewebcamp.com goodness.

You might also appreciate the Independent Publisher theme, which is not only beautiful, but has some custom code for displaying comments, pingbacks/trackbacks, and even webmentions and will shortly have additional mf2 mark up as well (or should, in it's next release which is right around the corner.) The Github code is ahead of the official release on WordPress.org if you want to test it out.