I have studied Go Ju for 15 years, and decided I wanted to expand my horizons a little. So I go up to this kung fu/tai chi school, watch a few classes, talk with the instructor a little, and drank alot of tea. Kung Fu is like nothing I have ever seen before. I felt almost like I was 10 years old again, walking ito a karate dojo for my first time thinking, what in the hell are they doing? and what did I get myself into. They were teaching shaolin 5 animal kung fu. I did a little research and decided I wanted to study Wing Chun. I think you should look into wing chun if you have not already, it would really balance your taekwondo by learning the hand techniques they practice. Or even better boxing. I think people should train in boxing or grappling first before any other martial arts training, but thats just my opinion. Boxing is great for kickers. And boxing is very effective pretty quickly because there is alot more pain involved, funny how that works. So my advice to you is, go to a boxing gym, when you get the basics down and want to get a little more philosophical, and go a little deeper, join a wing chun school. Your full contact training in boxing will help you realize what wing chun techniques will be effective for you and what wont.