Ingenious pattern! Could quickly become a favorite.

Crochet cast on with a G6 hook - 81 sts, knit 1st and last st together - 80 sts.

For my M1 stitch, I did a pfb.

Took about 10 gms for decrease section.

I’ve decided I prefer a 1.25” brim instead of 1.5”

Details -
SPI - 4.75
RPI - 6.25
Width - 8.5”
Height - 8.5” (prefer 8”)
Weight - 57 gms (2 oz)