Hood.
As far as the low pressure zone is concerned, have you considered doing a "soft" body panel that would flex as you open the door and stay taut when it's closed? The BMW GINA used this to great effect, if you're not familiar.
Yours wouldn't have to be as complicated as that but I could see using a few strategic structural lines covered in some sort of treated canvas (like old airplanes) to create a "good-enough" body surface that anchors on the Civic door. This would do what Skyking was talking about, but would not interfere with ingress/egress.
Now, it's not going to be a quick project, but I think if you gave it some time and played around a little it could be pretty cool, and work well too.
Please don't reply to this with a sarcastic remark or personal attack. I'm just trying to help. Thanks.