Hello!
Have you tried using picture books for ESL Literature in your classroom? Picture books work wonderfully for any age, any grade. You could use the Language Experience Approach and write what the students tell you, word for word. Then, as part of the writing process you could edit the story and create your own class story. It's just an idea...hope things are working out for you!
Have you found any literature that grabs you yet? A fantastic book for upper elementary students and middle school students I know of is, "Esperanza Rising," or "Esperanza Renace," by Pam Munoz Ryan. I also love, "The House on Mango Street," or, "La Casa en Mango Street." There are short chapters yet it is poetic and sends such a strong message.
Good luck!