The End of Wave B

My EW analysis suggests we are going up to about 1180 before we turn down for Wave C. Here's why. If we're in a Flat ABC, then Wave B must retrace at least 90% of Wave A. That means we have to hit 1168 minimum on Wave B. Breaking down Wave B, we would have to be just starting Wave v. Wave v is often equal to Wave i on an impulse wave. And if we make them equal, we hit our target pretty much. About 1183. Please critique.