I agree with 95% of what you are saying, and while bottom left is good for this particular shot, I disagree with your bolded statement being a positive thing.
In general, the reason we want to use extra rails for the CB is to make the small changes in speed control matter less for the outcome. For the same reason, in general, it's better to pick paths/spins that are less sensitive to speed, which would be the opposite from what you are saying. Obviously there's a limit to how hard you can shoot without your technique failing, but as long as this limit isn't reached, shot selections that are less sensitive to speed (and generally less soft, since rails kill speed and more rails are reached by applying more speed) are generally better.
Put in another way, a softer hit to achieve the same CB outcome will be more sensitive to speed than an alternative path, which is a bad thing.