We are building buck pens for our 3 boys. Right now they are each in large pens with their own ladies, but as we are growing in number we need to do some shifting around. We started building buck pens this weekend and I am not sure if they are large enough, SO says yes, I say mabye. The pens are going to be 16' long and 10' wide, does this sound big enough to house my boys. I have 2 Nigerians and 1 Mini-Mancha, they each get their own pen as they do not get along.