Well, almost all questions have been answered.
I just thought of this video here:
It's Joel Salitan showing his compost, that he
a) has on concrete - *so if inspectors come to his farm and are worried about run off, he can show them, that there is none.
b) puts full cows in.
I also agree with Marco to not to worry to much about your ratios.
I personally love to use woodchips as carbon material.