I think your coop will be secure. Except if you have bears. Do you have bears? I have bears. They've been my worst predator over the years, and there have been several extremely close calls. Well, maybe bobcats are worse, but bobcats are sneaky and tricky rather than destructive. I've lost two hens to bobcats but none to bears, in spite of them coming around and drooling over my chickens in the run.
But it hasn't stopped me from brooding baby chicks in my secure covered run. My current chicks are not quite four weeks old and they've been outside in the run ever since the second day after I brought them home.
They've survived and thrived in spite of it being fiercely cold, ten degrees one night, and 30s during the day. My run and coops are pictured on my avatar beside this post. I've never had any animal breach my run, and only minor damage to the coops over the years by bears trying to get into them.
Like I said, if you don't have bears, you probably won't have an animal breach your coop.