From the pattern:
Noro Big Kureyon (bulky weight wool, 176 yards/skein) -- 2 skeins (I used less than half of the second skein
US size 11 (or larger!) dpns and 24" circular needle
Adding half a skein of 88 yards to a full skein of 176 yards, that would equal 264 yards.
From KnitPicks description of WOTA:
Content: 100% Peruvian Highland Wool
Amount: 110 yards/50 grams ball
Gauge: 4.5-5 sts=1" on #7-8 needles
Since I need double the thickness of the WOTA, I would need (264 x 2) 528 yards of it. 528 yards divided by the 110 yards per skein would require 4.8 skeins, meaning I need to buy 5 skeins of WOTA. Is that right? :?? If so, then I'll order three of each of the two colors I use.
I have no idea if this is right or not. Obvioulsy, I did not major in math.