If you check the original craftster KAL, a number of ladies decided to increase the number of cast on stitches so that the neckband wasn't so tight. I think the original pattern was a size 6-ish. I remember a number of posts that did all the math to figure out the first raglan row after the ribbing so I would check there first. There are like 68 pages of posts, but well worth the time wandering through them.
I'm a size 6 (generally)- (and *ahem* small chested) and the original pattern worked great for me. HTH, MKZ
did I say one project at a time?