1. If it's just for a trip like Kata Knife, you can learn from anyone, even videos.
2. I don't know where to study if it is for actual combat. There are many things from other families and prisoners in Chen's Taiji Zhuan. I suggest you learn this.
3. If it's for the experience of traditional family boxing and Tai Chi culture, I recommend you to go to Teacher Liu Wenbo and Tai Ji Chuan Club in Riverside Valley. I can't say whether you can really play, but the Tai Ji Chuan there is really clean and pure. I suggest you get to know it.