Wow lots going on. I've never done tai chi but it definitely sounds like a great thing to do "at our age" - I find a lot of yoga too intense now! Your business idea is great .. you must enjoy it too much is the main thing. And glass blowing - fun!!!!
I have been doing yoga for many years and have really found myself enjoying the Yin yoga, slow and stretching and with Thai Chi I get the nice gentle movement, the great music and the connection with the earth and energy. It's wonderful. Yes, glass blowing was cool.
I used to really like yin. I even did a training in it after I did my yoga teaching training. But after COVID most of our studios shut down and all the good yin teachers disappeared. I don't enjoy it as much when I do it on my own these days. I miss the meditative instruction.