This is the same location at a height of 30 feet:
http://www.tvfool.com/?option=com_wr...9900a162895b54 . It looks like it meets all the criteria.
The Wife Acceptance Factor for something as large as the HD7084P on the top of the roof is going to be pretty low, though. I do have another one-story roof over a portion of the garage which has an unobstructed view of the skyline in the appropriate direction. That may work out in the end.