Hi Kelley,
This wasn't your question, but I wouldn't graze sheep with goats unless you have really serious fencing, which is hard to do rotationally.
Goats - as you may have heard - are escape artists. Also they need a lot of browse (shrubs, trees) so they won't do as well on pasture as sheep will.
Goats are wonderful but they're tricky. The only way we can rotate our goats through different areas is to tether them to one spot, and that can be tricky because you have to make sure that they don't get caught or choked by the tether. Even so, they often break free and go for our nearest fruit sapling!
