The following book lengths are taken from audiobook versions of the books. Following this schedule, you'd finish the entire year of books in 35 weeks if you read aloud or listen about 30-45 minutes a day for 5 days a week.

Old Testament Times:

Perelandra by C.S. Lewis 7 hrs and 47 mins (3 weeks)

Adam and His Kin by Ruth Beechick 4 hours (2 weeks)

God King: A Story in the Days of King Hezekiah by Joanne Williamson and Daria M. Sockey 7 hours? (couldn't find an audiobook version) (3 weeks)

Ancient Egypt:

The Golden Goblet by Eloise Jarvis McGraw 7 hrs and 36 mins (3 weeks)

The Cat of Bubastes by G.A. Henty 11 hrs and 30 mins (5 weeks)

Ancient Greece:

Till We Have Faces by C.S. Lewis 8 hrs and 6 mins (4 weeks)

Ancient Rome:

Julius Caesar by William Shakespeare (Oxford School Shakespeare Edition) 2 hrs and 21 mins (1 week)

The Eagle of the Ninth by Rosemary Sutcliff 4 hrs 32 mins (2 weeks)

New Testament Times:

The Bronze Bow by Elizabeth George Speare 7 hrs and 42 mins (3 weeks)

Ben Hur: A Tale of the Christ by Lew Wallace 23 hrs and 12 mins (9 weeks)