abcZ This doesn't provide everything needed. It provides the bare minimum functionality to get Google Camera working, but it doesn't allow the servers to download extra features for the camera and Google photos.
It also means that by using this, you can't install Sandboxed Google Play anywhere else on the device, even other profiles.
For someone who is asking about Stock OS features and that wants to replicate as much of the Stock OS functionality as possible, this is the wrong recommendation.
Keep in mind that if you don't want to use Sandboxed Google Play (Play Services/Store), you can also just use Google Services Framework with Google Camera without barring yourself from installing Sandboxed Google Play in other profiles:
When making recommendations like that, please caveat them appropriately, because that's how people install things like Gcam Services Provider and then are confused about why they can't install Sandboxed Google Play.