I need advice please. I can't free range my girls as I would like because some people drive very fast on my road. The speed limit is 15 miles per hour. Ah well I do have a lot of land however. Their run is 12' by 14'.and covered in wire. How high a fence do I need'',uncovered,, to keep them in, and what kind of wire? Cost is important also.I would like to built a pretty large area. I have 15 girls and in May I will get 10 more. I love them so much!