Well, there were mishaps along the way to get to that point, so patience and practice should be key considerations for you at this point.
I think that sounds like a good idea - do what you are most comfortable with. Good stretching on your head is just as important as on your face - if you can stretch the skin away from problem areas (like the tops of the ears) you can avoid danger.
Good luck - and I would love to see a video of your head shave in the future too!!
James.