It's been awhile but if anyone's still curious I re-worked the front end since the other idea was problematic (and a little lopsided). The windshield is extended so that I'm fully sheltered and I've stretched some spandex across the handlebar gaps. The dashboard is rubberized with that ingenious Plastidip spray from home depot. Here's the new front:
There's a small 500 lumen headlight poking out under the windshield. It's going to get a top after all, ahead of the cold weather if we ever get any, more of the spandex with a treatment I'm experimenting with.
I've been commuting with this rig since I posted the first pics. You guys would not believe the difference it makes in going faster easier, and staying warm and dry! I'm easily 3-4 mph faster at my normal (pathetic) power level, more than that when I can conjure up more effort.