Is it a pattern that tells, you to knit so many rows? Or is the number of rows constrained by a pattern? Not a fan, for obvious reasons. If you're knitting up from the cuff, would it be possible to accelerate your increases to the armhole?
Also, how does your yarn behave after a wash? I remember knitting my eldest a lovely red jumper that went splat, after a wash, so it was almost twice as wide as it was long.