In a small bowl, whisk 1-1/4 cups flour, baking powder, salt and baking soda. In another bowl, whisk cocoa and remaining flour. In an airtight container, layer half of flour mixture and half of cocoa mixture; repeat. Layer sugars and chips in the order listed. Cover and store in a cool dry place up to 3 months. Yield: 1 batch (about 5 cups).