Hi, wondering how many square feet inside of a mini barn is recommended per full-size vs. pygmy goat? Other relevant info - we're in upstate NY so cooold winters, but goats will have free access to ~1/3 of an acre (11,000 square feet) from dawn to dusk, just closed up in the mini barn for the night for protection. And while we're at it, is it the same indoor size recommendation for sheep? alpacas? potbelly pigs? Thank you!