As you read through the launching lessons of Daily 5, I think you'll begin to see how this format will allows so many ways for your students to build both oral language and book language skills in both English and their native language.
In Read to Someone, partnering native English readers with non-Englsih readers will give them then chance to hear the language from peers. You might even add a time in R to S where they talk about the story and ask about words they don't understand with their partner.
In classrooms I visit, I see some teachers make Work on Writing a partner activity once a week. This again is a great time for building peer oral language interaction.
When you say reading material is not "a matter of great concern", I assume you have an abundance of materials--lucky you!
I think if you look at all the areas of Daily 5, so you imagine how oral language comes in to play.
Through mini-lessons, you share oral language through your sharing of books and fostering discussions.
BTW, I don't know what languages you have in your school, but have you seen that the CAFE menu is also available in French and Spanish?
As you read through the website and the CAFE and Daily 5 books, please post your successes and questions here, and many of our members will share their thoughts and ideas.