How to use model made for game engine in C4D?

Hi Cgtraders

Today's my first purchase, let me post a beginner question: here's this gorilla model, rigged, with fur and the face rigged too. After downloading I found out it's in 4 different files.

1 a body mesh in t pose, rigged, with a pose morph tag to controll the face, also nice curves for this face animation, but unbinded (so they're just curve objects, floating)

2 a fur in t pose that has the same body rig as the mesh,

3 a file that's only guides for the body rig,

4 invisible guides.

How would you go around combining them so there's one file that's ready to be used, the fur is on the model, and the curves for face animating are binded to the pose morphs somehow?

Why put it into 4 different files by the way?

thanks for the help

best

Peter