When you are done, you will have a great picnic quilt!
I am not a fan of bias edges. If I have to cut something on the bias I starch heavily. I have quilted one quilt where most of the blocks had excess fabric. I didn't use a panto, I did each block separately. I used cans on either side of the machine head to add tension and a puffy batting and was able to make the final product lay reasonably flat.