Creating an isolated animation from high key or low key video?

Hi guys

Some friends of mine have asked me to create an animation from a video.

It needs to look completely isolated with no background and just be a silhouette of a golf swing. I have reasonable cameras (Canon 7d or Panasonic AG-AC160) and have access to black or white backdrops and some basic lighting.

Would you recommend going high or low key to create a good extracted silhouette?
Would anyone be able to give me some pointers as how best to edit this to create a professional result?

Thanks

Andy