That sounds like a great setup! Nice choice of fence panels. Those goats man, they will open those doors if they figure out how hahah! Goats are kinda incurable that way.
I would be concerned it wasn't tall enough, plus its big enough for them to get there hooves in to climb. Possibly big enough for a Nigerian dwarf to get its head through close to the top as well.
It may work though, you never know, I just know that my goat would lol! Maybe electric wire as well...
Nigerian Dwarfs alongwith Pigmes are master escapers. Make sure the fence is small enough so they can't climb it, or at least tall enough they can't climb it if you don't have small enough wire.
Assuming by how far apart you meant how far apart each pole or post is, correct?
Backyard herds is an informative forum, but no EVER responds. If you do get a response, it takes days. I'm signed up, but I never use it for this reason.
The Goat forum is a good one, more response, and also very informative. Hope that helps!
The posts your talking about, as far as I know are...