We're just east of OKC/Edmond about 15 min. Don't show goats, got them pretty much just for milk and enjoyment recently and they've done a good job of both. Besides, I'm not sure I'd have time to show goats if I wanted to with all the horse competitions we go to. Maybe when my son gets older if he wants, he can show them but not in my plans.
I think your plan for the hoof is good, again, I'm basing that off the theory that a goat hoof and horse hoof although different would at least respond to treatment for cracks the same. TSC sells the appoxy I believe. We literally had to reattach part of a horses hoof with it once and it worked great. Its also good for less sever cracks, breaks, etc. We've had good luck using it.