Kempo is what Quinton said Chuck is, a Kempo fighter. Quinton was saying this because Kempo uses a lot of headbutts and eye gouges - he was saying Chuck did these things....
But yeah, I see no point in going for Israeli military self defense or Kempo, stick to Muay Thai/Kickboxing for standup, BJJ for ground, and just fuse the two...but you basically have more choice with the grappling - BJJ/Judo/Wrestling/Sambo, etc.
favorite MMA fighters
A. Rodrigo Nogueira
Mauricio "Shogun" Rua
Georges St. Pierre