SAT & AP Relations

In preparation for the new SATs next year, I am debating whether or to take AP English Language and Composition as a junior to obtain vigorous training for my English or focusing on the literature side with the British Literature and Modern Fiction courses at my school.

Is the curriculum for AP English Language and Composition going to help improve my SAT Reading and Writing score? Or are literature classes going to help more?

Moreover, is the new SAT Reading and Writing section aimed more towards AP Lang. & Comp or AP Lit. & Comp?

Thanks!