Hate to harsh your excitement, but.....I wouldn't put more than 2 full grown large fowl chickens in that coop.
Prefabbed coops are almost always way too small....and often not built very well.
But it would work great for raising chicks in for a few months....which is what most folks do after buying one of these and finding it too small.
For that kind of money you could build a much more appropriate coop and run.
The Cedar Coop that you posted about here is a better go if you're still convinced to buy a prefab.