For how secure the wire of that run is:
Wire strong enough to keep out a dog, fox, or coyote: probably yes.
Keep out eagles and hawks, probably also yes.
Wire holes small enough to keep out mink, rats, snakes, the hands of raccoons, the paws of cats, etc: probably not.
Strong enough to keep...
Yes, that would probably help.
Chickens also enjoy having something to scratch in, preferably a variety of things. That is easy to manage by putting in wood chips if you have a good source, weeds and/or grass clippings in the summer, dry leaves in the fall, anything compostable from your...
There is at least one error in their measurements.
They say 4.4 square feet of coop
They say the run is 52.7 inches wide
The coop is the same width as the run (visible in all photos)
The only way to have a coop that is 52.7 inches wide and contains 4.4 square feet is if that coop is 1 foot...