Regarding the frame finish . . . one of my favorite bikes below with what look like nickel- a link at least, not sure how to post the picture.
I did a CB350 frame in bare polished metal and then clear powder- it did not adhere correctly and cracked in lots of spots. The coater had never done one and the price was right so I went for it, trial and error, right? Maybe your coater has better knowledge. I did a bare polished metal tank and had my local body shop clear it- same thing and even peeled off on spots. The shop owner talked to his supplier before hand and he said the clear would not adhere well as it was too smooth and there was no primer or sealer I think it was. I had him do it anyway and it held up pretty well but not a long-term thing and you had to be very careful with it.
My opinion, as beautiful as a frame might be, it should be black . . . although the nickel below is gorgeous:
3rd post down:
http://www.hondashadow.net/forum/53-general-discussion/101574-kawasaki-w800-very-nice-2.html