John,
You bring up some good questions and I liked that you worded your answers as questions. It gives us something to ask ourselves and something to think about.
Being prepared as an online instructor is very important. It's essential to know what you are capable of and where you need additional training. Your note about the course being well prepared goes along with your information about the instructor being prepared as well.
The mentor can many times help you in this process. Excellent.
