Lets try this another way. The pointy windshield isn't going to help, much or any. Reduce your frontal area with narrow and dropped bars, and then build a fairing for behind your body. Google Oscar Egg bicycle....
In human speak: You are a scoop of ice cream, the fairing is a pointy ice cream cone, the cone should be BEHIND the scoop of ice cream if you want to improve aerodynamics
In engineer speak: boundry layer separation should be avoided by avoiding abrupt decreases in cross sectional area behind the largest section