Sounds like a great start. You can get Copasure in goat boluses from Jeffers and other places online. Goats need 1 gram per 22 pounds, and depending upon your situation, you may need to give it every 3-4 months, regardless of what the label says.
http://www.jefferspet.com/products/copasure-capsules-for-sheep-goats Symptoms of copper deficiency are faded coat (red goat turns cream; cream goat turns white; etc), fertility problems, goats don't get pregnant or stay pregnant. You might also see fishtails and hair loss on the face, especially bridge of nose and around the eyes. There is a picture in the buck article of a copper-deficient black buck who looks reddish.
If you put the goats in the barn separate from the sheep at night, that's a good way to provide them with a free choice mineral. They need access to it daily, but if that's only 10-12 hours a day, that's fine.
There have been around 15 or so studies that have shown that COWP also works as a dewormer for stomach worms, such as barberpole (haemonchus contortus), which is the one that causes anemia, so you might find your goats doing much better after that.
Only bucks need ammonium chloride, but if you're not giving him grain, he shouldn't need it.
And yes, I'm sure Murray will be happier with a couple of girlfriends.
