Newbie alert... Help us?

[TheRookie]

Okay, I have several questions.
1. What type of fence posts are best for a chicken coop? Cedar or metal?
2. Average square footage for a run (per chicken)? We have 12 standard RIRs and 5 bantam Silkies.
3. Best height for a fenced run? (Im not clipping their wings)

Okay I think thats it for now. Thanks.

 

[Cryptkeeper]

I built my run @ 10 sq' / bird (and included extra for the addition of new birds) and 8' high