Not sure if money is a factor, but without all the goodies, you may be better off with a different vehicle. Seems like the OP isn't really interested in what makes it a luxury car as opposed to just a sports car.
That said, I'm sure you can get a bare bones model with just the driving features/enhancements and be satisfied with it. I just wonder if you may be better served with a different car. It's probably blasphemous, but thing Mustang GT with all that performance/power on tap, very good handling, etc and save some $$$.
I'm just amused at your reaction to the HUD. I found it cool/amusing when I first saw it, drove it for a couple months, and then drove a rental and found myself whining about not having HUD. It's almost to the point I think, how did I live without it. Different strokes for different folks I guess.