So... I finally made it through one set of the pattern!!! Only two more to go before decreases :o)
I honestly think having the lifeline there made me pay even more attention, I haven't had to frog at all since I started using it (knock on wood!) Either that or because I'm doing this pattern for the 5th time now I don't have to think as much about it to make sure I get things done.
BTW - is there an easier way to do a lifeline that what I've been doing? A friend told me to use fishing line and a tapestry needle and just go through each stitch of the row I just ended on. It's not that it's terribly difficult, but it seems like it takes way longer for me than knitting a row.