I have purchased some quilting filler and plan to make a Clark Z-Liner type pads.

I plan to make the nylon encasement like a box,
with a top and bottom and a connecting strip all round.
If that makes sense ???

I wish to use multi layers and I’m wondering how to stack
with folds or not ???

Q #1. Would you choose A-B or C and why
Q #2. would you sew them together.
Q #3. would you sew at least one layers' perimeter to the perimeter seams of the encasement ???



Thanks for you consideration