Probably about 15-20 hours of total work. A good deal of it was stripping off the old finish. Sanding took a little bit of time, as always lol. Started with 100 grit on my ROS, then 150, then 220. Then hand sanded the whole thing with 220. Applied a coat of tung oil, let it sit 24 hours, lightly wet sanded with tung oil and 400 grit paper, wiped dry, let it sit til the next day (around 12 hours), lightly sanded with 500 grit paper and applied a third coat of tung oil, let sit over night and sort of buffed it with a soft cotton cloth.
I let the copper pieces sit in some CLR for about an hour and hit them with a light wire brush. They cleaned up nicely! I left the tacks be though, I thought it was a nice contrast to the clean copper.