That's a cute pattern. It looks like the gauge on that is 14 stitches over 4 inches.....I think that the Blue sky Cotton might be able to get that gauge, but it would be a very loose, airy fabric. Can you get a hank and try a swatch?
Ariann Cardigan in Brown Sheep Cotton Fleece - 11 inches and two buttonholes done!
Tomato from No Sheep for You in Cotton Ease - nearly done! One sleeve left.
Tuscany from NSFY in Elsebeth Lavold Silky Wool - it's working up beautifully.
Montego Bay Scarf from Summer 07 IK Knits in Sea Silk - an indulgent knit