I just recommend reading what has worked for others. Raccoon can and will climb in a chainlink fence, and they do reach in welded wire. My girlfriend last summer lost a whole flock that exact way. (Welded wire cage inside 6 ft high chain link run covered with deer netting). They are not supermen, but smart and crafty. Its only a matter of time before some predator tries to get into most any coop. Its not just raccoon, but weasels and snakes.
No one is raining on your parade, just trying to save you the heartache of loosing any chickens. Its not fun.