I don't know why short femurs automatically means your saddle needs to be far forward. KOPs is one a way of making sure you have adequate setback, not an important biomechanical relationship that needs to be maintained. If you have atypical body dimensions you have to be smart about how you approach fit. Your femurs do not run the show.

I'd highly recommend you put your saddle height and setback in a normal place on a bike with a relatively low stack height.