4mm for main gauge, 3.25mm for hems and the double knitting at the beginning of hood.

No changes to pattern. I picked up 80sts for the hood, and it’s plenty big enough.

Body (without sleeves and hood) weighs 127g (572m)
Body with hood (knitted to 9.5” before starting the short rows) weighs 168g (756m)
Hood took 41g (184m)