I have three kids (7, 5, and 2.5), and I want to encourage them in martial arts for fitness, discipline, confidence, etc. My two oldest have participated in TKD a little back in the midwest, and the 5-yr-old wants to keep at it. However, here in SoCal, there are so many options. Which discipline would give the best base for continuing study (or possibly MMA, down the road)? Thanks, and sorry if this is an overdone topic (too lazy to search).