First off, thats possibly the worst way of choosing a martial art. Forget EVERYTHING that you've learned from the movies, because it really is not anything at all like it is in the movies. They're all highly choreographed moves. Nothing more then dancing, with punches. It's best you flush it all...
I'm the short guy kicking someone's ass, so no lol. anyways height and weight mean nothing. Though people like me, recognize that height and weight can be a mental factor, and can be intimidating, so the fight in people like me, i imagine is bigger. Whoever has the biggest fight in him, will be...