I went for the bronze for the 4 ports forward. Replacing the picture windows is certainly an interesting idea...I'd have to refer to NFM, I bet you could put in a couple of wider ports where the picture windows were. They would look great. As you said, it is the interior that would be the challenge.
Incidentally, I already have a port in the galley, on the bulkhead above the sink/icebox. It is great, keeps the air circulating, I love it.