I’ve knit this pattern two times before. This is for a gift and was a perfect choice for the yarn and the beautiful colorway. The varied colors combine beautifully.
Held two strands together (from center and outside of ball) and used almost every last bit of yarn - maybe a foot or two left. To find out how much yarn to leave for the edging. Weigh the ball of yarn before knitting. Cast on and knit the first edging and weigh the ball of yarn. The difference is how much your ball of yarn should weigh for starting the ending edging. I’d give myself room to play with.