As I may have mentioned before, I do not believe there is a best style when it comes to traditional martial arts, it is more the individual than it is their style. A talented martial artist with the physical gifts necessary to utilize their tools in a skilled manner will find success in my opinion and experience. It is more so about the individual athlete and their skill set overall than the style they offer.
I do believe that one must believe in their style, to find any sort of effectiveness. Your mind set has to be that your Kempo, Gung Fu, Tae Kwon Do, whatever is going to work for you. You can not half believe, you must utilize your training properly, how you were taught and be prepared to be dynamic when necessary.
So if your style dictates a lower, wider stance than other people, utilize what you have been trained to do instead of second guessing yourself and attempting to modify shit before you even have a chance to see if it works or not.
I personally do not believe in Kempo, to the extent I have no desire to learn it, and its a readily available style in my area with no shortage of schools. But Ive seen enough to know I would never believe in its effectiveness so there is little reason for me to even show up to be honest with you. I have trained with a variety of different experts in a number of styles, so ive been exposed to a number of ideas throughout my short time on this earth and know I must look for the path where I find truth, and this is what I recommend for others as well.