As I have been out of training for several years, I had decided to return to MA as a white belt; beginning at the beginning. After some consideration, though, I am looking at CMA, rather than Karate. The closest studio is about 10 miles away, here. The sifu, Greg Zoganos, states he was certified by Grandmaster Chan. The school offers Northern Mantis and Tai Chi. I am meeting with him, Zoganos, this evening and will observe a class. Any advice on questions to ask, things to look for? I've done some research online about the system and Chan. Any aditional insight would be helpful. Thank you.