Wow – I feel for you! My mom was an English teacher for years and they actually taught her (in college) a lot about using whole, living books rather than textbooks. So she has always adapted the material and used the texts as a ‘jumping off point’. I will ask her for suggestions, but this is what comes to my mind:
Could you find alternative, living books (I am thinking of the D’Aulaire books or other, living biographies)? If you have to use the textbook, you could read living books in addition to the text.
Also, with only 4 students I would assume that they could take turns narrating what is read for the day? I would think that narrating would be incredible for developing mental ‘writing’ skills, especially for kids at that age.
Could you find artwork and poetry that relates to the character, country, or theme? Then you could do picture study and a poetry reading with them.
Since the theme is about how talents communicate ideas, how about music appreciation? I would think that studying a piece of music and discussing how the composer’s choices effect the mood of the piece would be interesting – at least for the kids who like music :).
I wouldn’t worry too much about the fact that it is not chronological historically. That much isn’t really in your control – but the methods you employ to teach the material can be tweaked to make it effective in the classroom. And I am guessing the kids will learn so much more and love the class as well!
Blessings to you.