I'm gaining speed!!!!!

Fifteen repeats done now, so thats half of the main panel of the stole! I can hardly believe how quickly its knitting up:-) I do have a potential problem however......... I've nearly used half of the yarn. The pattern says 1200yards, I have 1260 over two balls, and one ball nearly gone, so I'm gonna run short for the knitted on edging I think?? Unless I get a few more repeats out of the part ball left. I'm going to have to wait and see, but I can definately envisage me having to use a narrower edging and work out the math, or try to find some yarn in the same colour and dyelot as when I bought this over a year ago.................. nevermind, we'll just see!