Cali,
If you are serious about looking into KO, I recommend reading the book. It might even be at your local library, so give that a shot first. You'll find that those index plays (indices) are based on only 3 points in the RC...it's that simple.
I'll apologize for not using the correct KO terminology, because I have customized some of the terms and the count levels for my own ease of use. But there's a point at which you would stand on 16 V. 10 (I call it the TP - turning point), a point at which you are at a distinct advantage and many of those other index plays become valid (I call it the AP - advantage point), and a point at which you would take insurance (which is one below the advantage point).
But don't let my adaptations cloud your learning. It is an easy system to use. Some will lobby for their own personal favorites, and there are several good ones out there. I used hi-lo a few years back, and switched to KO because it suits my personal tastes. Like I said earlier, read up on Hi-Lo and/or KO and get an inside look at how all of this has been designed and how it is supposed to work. It's all mathematics, but the execution is what separates successful players from posers.
good luck