If I were to make the flare even with the body like the fronts I am looking at 3" coming off---you haven't seen the "bad" angle. haha. In the 80's we used the "turbo" mirrors which looked a lot like yours, good looking mirror.
Oh, I think we've seen the bad angle. The really, really "bad" angle (bad=good of course).
I was guessing 1" so projection beyond tire face was about the same front and rear. 3" seams like tread would be exposed.
I like the looks of the alum. mirror and wouldn't look out of place . . . but if it was a 4X4 I think a couple of those babies would look good attached to the top of the roll bar as spot lights (just joking).
Any difficulty getting in or out with the frame cutting across the door opening? If you use the La Carra wheel as Warren suggests there might be a bigger problem getting your legs in. Any thought towards a "D" shaped wheel?
I like your style. Instead of a Tiger tail from the trunk, you're trailing a human. Or . . . A poor mans Cobra gets a poor man wheel chock.