Any vehicle is a bundle of compromises. There are some aero modifications that can benefit handling— like a boat tail, which doesn't benefit overall length (parking, etc.)
Consider the infinity wing. A little
fillip at the trailing edge might act as a vortex generator that functions as an air curtain over the front wheel, without the normal internal ducting. I see some possibility there.
As for the alignment question, it's really about the stagnation point. Flush or a little forward is prolly best.