Why Karate and not Kung Fu?? You will understand what I mean when they start kicking eachother with their combat gear. There is a good group at Victoria Park on Sundays. See many good children with rosy cheeks and good movements.
Actually, I want to start him with any kind of class, it could be karate or kung fu. The one you mentioned in Victoria Park, is it classes or bunch-of-kids-get together-have-fun type of thing?
Saw on the news today that someone died at a ladies boxing match (wearing protective head gear). A word of caution to those parents whose kids attends martial art class with combat element.