Removing the airbox is unnecessary, just the top of the filter is fine.
Your throttle body is filthy, I see you doing a full CCV in the future.
A flex 1/4" extension to go with the 6mm socket is invaluable.
I was in the 45 minutes in the dark with a hot engine. This can be done after you drive home from work. I give it 2 putty knives.
Nice writeup, thanks!