This looks beautiful Steve. Just a heads up - Of course it's your model and you can do what you want - FYI That ring on the base of the deflector housing was never copper. That's lighting, shadow, reflection off the dish, and '60's photograghy causing a hugh in that area. It was added mistakenly during the restoration, but it was never there on the physicle model during production of the series.
I'm sure folks here will have TONs of referance to support this, right up to the photos of the ship being uncrated for the first time at the Smithsonian.
Thought I'ld save you some paint. ;-)
Respectfully,
Tracy