Who would I cast?

Thoughts of casting the characters sometimes comes up when I'm guest-blogging or when I get emails asking if there will ever be a Southern Witch movie.
I think Isla Fisher would make a good Tammy because she's beautiful in a cute sort of way, is often hilariously funny in her roles, and has red hair, of course.
I couldn't come up with a Bryn at first, but then Liz, one of the fans of the series, suggested Henry Cavill. I googled and saw this picture of him and thought...yeah, that works. Now...