You may want to ditch the driver side mirror and cover it with a block plate, I'd imagine there is a lot of overlap between that mirror and the rearview. This is assuming you always look over your shoulder before entering a lane. Or would this be a safety inspection issue in the state of Texas?
Another aero tip I picked up from Honda is creating panel overlap. For example the fender and front door you want the the beginning of the door to tuck into the end of the fender. According to them it creates continuity in airflow across the car, but mainly serves to reduce wind noise.
