Congratulations!
You will get used to the mic thing. Also, there is nothing wrong with doing moves 8 times in a row (sometimes I use that amount of repetition to give modification ideas). The biggest thing is to do exactly what you did, keep the flow moving.
BTW, when I teach step I always use notes and I have been doing it for years. I can do without but I like choreography and self reversing routines so I use notes. I do not use notes during my yoga or sculpt or other cardio classes (but do with pilates due to the need to memorize the order).