Google+ Knitting Request

Google+ Profiles Product Manager +Frances Haugen is working on a simple roll brim baby hat inspired by the Google +1 button. It looks like it'll be very cute. She's looking for advice on what to knit the hat out of, and whether she should do it differently. Check out the pattern below:

She's also posted the pattern as a spreadsheet on Google Docs. We've got a lot of knitters in WonderHowTo - what advice would you give Frances? Post your comments here, and I'll send them to Frances.