Aaack, this thread got away from me!! The last time I read it, Angelia was going "Yippeeeee!"
It looks like the patten is calling for a worsted weight. If you want to switch fiber content (I'm going to pretend I know what I'm talking about), definitely swatch it out first - especially in the rib pattern. You're going to want something stretchy with this one.
One benefit to this pattern is that there's no seaming, since she's basically combining a shrug with a tube, hence the name. I'm sure there are going to be techniques I've never done, so we will all learn together! I've never done a sweater before, but when I start working on this one, I'll also be working another one at the same time (I think I'm insane :rollseyes: )
Also, don't feel you need to use as many colors as she is - I'm probably going to knit a solid body, and keep the stripes that are on the sleeves, or some other combination that I haven't thought of yet.
For yarn, I think I might go merino style, or I might order some Peruvian wool from Elann. Then again, I might go Cascade 220 - I'm loving that stuff right now! (I'm swatching that right now for Twist and it's a bit softer than I thought it would be).