So now I am wondering, if the shop has any bikes with shorter crank arms that I could test ride, if I would be able to tell anything. The owner thought they maybe have an old set somewhere that they may be able to put on my bike so we can at least try them before I buy a set since it is not going to be cheap and I hate to get one (165 or 170mm) or the other and then have it not be the right one.
I am going back today after work. It appears I have the whole shop brain storming on this.