The longest strips are for the binding, and the others are for the sashing.
and this is my bag of nearly 200 little 2 1/2" x 2 1/2" squares.
I decided to cut some more of the little squares as I will do strip across the back of the quilt. I was able to get the backing fabric (plain white) at Spotlight at 40% off (woot!).
Now onto the chain stitching....