I'm getting excited that this KAL is going to start soon, so I decided to swatch. I am using Brooks Farm Solana, their new superwash wool, which is more like Aran than worsted weight. I tend to be a "loose knitter" so I got gauge on size 6 needles. I am in love with this yarn! It is more of a teal green color than it looks like in the picture, even though I put it in natural light to try to show the true color.
I was re-reading the pattern, and there's absolutely no reason not to knit this in the round. The back and front are the same, and placed on holders at the end, so it will only make it easier if it's knit in the round. Easy as pie - just double the amount of stitches cast on and do every row twice instead of once. I'll have to check the pattern to see which purls/knits might need to be adjusted, but I would think that should be easy to tell too.