Hi, I was just given 300' of heavy duty 5' tall fencing, I'm planning on building three 20' x 20' pens for my 9 goats one for my Nubian Buck another for my 3 whethers and the last for my 5 does. First off should I make any adjustments for these living arrangements? I was thinking of maybe 10 x 20 for the Buck or would even 10 x 10 be ok? the whithers are meat goats, should their pen be smaller? Also, a couple real important questions, How far should the post be apart and what would I need to do to keep the buck from getting out? should I place electric fencing along the top and inside perimiter? Thanks Ed.