Jimmy, you'r plan sounds solid. My fish did develop Ich again after 6 weeks of hypo, and I had done exactly what you are doing, so it was easy to treat with copper, which finally beat it. I believe the two weeks at regular salinity is your final proof, and if you'r like I was, I was determined NEVER to let Ich back in my display.
An update on mine, they have been in Cupramine since 10-19 and (unless I'm mistaken, as there is a spot on the tang, but I don't think it's Ich) and Ich dropped off in a couple of days and hasn't been back. So I'm starting my six week count from 10-23. If this one spot I'm seeing isn't Ich, they'll be moved on Decenber 4th to a Nano cube for a week or two, and if no signs re appear, they get to go to the big tank.
Guitarfish, I'm going to PM a picture of my guitar collection, there are 40 in all.