Check out the videos above for low notes (sounds like an ad XD)
But unless you're basically done with the video (in which case I don't want you to have to add more stuff when you thought you were done) I think you should include the Jade performances from the Yokohama concerts a couple of weeks ago.
Maybe mix the clip showing the best high notes from both performances, I think when the lines "I still believe, together" and "now and forever, you'll be loved" are where he hits the highest notes.
Jade, 8/14 "I still believe, together" is higher on this version at 5:10 to 5:16
[youtube]http://www.youtube.com/watch?v=yfRYSP1J0FU[/youtube]
Jade 8/15 "now and forever, you'll be loved" is best sang on this version, 8:28 to 8:31
[youtube]http://www.youtube.com/watch?v=rrEEccAwQBg[/youtube]
If you've already basically finished the video and don't feel like going back to it and adding more I understand.