Not to mention, morally you should probably ask him permission to use his shots anyway. But even if you did, his shots are going to stick out like a sore thumb.
The quality is already degraded an unusual amount in his edit. I figured that being a pro editor, he'd have ripped using a codec like apple prores422 or even lossless. But using his work in your own would add 2 further steps of degradation on top of this.