I'm so glad your first class went well!! I admire you for taking that step, and just doing it. I was around 180 when I started, and I remember feeling SO out of place. But my instructor was wonderful, my kids loved the classes, and I found out I was actually really good at it. Well... till we started talking about getting airborne. I had tremendous difficulty with the flying kicks.
I know that I went nearly every night, and we worked for at least an hour solid, sometimes closer to two hours. Between the running, the stretching, the forms, and the practice and sparring, I was a sweaty mess at the end of every class. But it was fun!! I kind of miss it. I wish I could find another instructor I liked as much. But of course, now we're into the horseback riding, sooo... one thing at a time, I guess!
Keep us posted on your progress, I'm curious!!