best way to model this to be animated?

RaptorCWS

So I'm working on this stylized pirate for my portfolio so I can apply to this 3d generalist position. I'm about done with my high poly sculpt and I'm starting to wonder how am I going to animate this? rigging is probably my weakest skill and I could use some advice on how to go about getting this done. That being said the part that concerns me is the over coat. It should move like a cloth, but I have no clue how to simulate cloth in a game engine. I know the studio uses unity. so what steps should I take in my retopology and rigging to make this as painless as possible when it comes time to animate?

also in critiques on the model are welcomed as well