What a fantastic fabrication job RipplingHurst, that looks great.
I think I must have sat in the driver's seat for about 30 minutes just going over various screen placement scenarios in my head. If I had any confidence in my fabrication abilities at all, I may have decided to leave the factory head unit in the dash and done something along the same lines as you. I probably would have preferred something like that too, because it gives you the best of both worlds.
However, there just isn't much room at all in the factory overhead console, and I fear that I would have had to remove both the sunglasses holder and maybe move or remove the overhead lights as well. I was more than a little nervous about attempting something like that since I don't have a fabrication background.
That said, I think at this point I'm fairly committed to replacing the head-unit, and the parts I have ordered thus far are geared toward that end. Hopefully I've done enough planning that it all goes fairly smoothly.