Sorry to respond after your final conclusion, but I'd like to share my experience with you about using calendar vs using NA list:

In my calendar are my scheduled actions. The ones that cannot be done any other time. Usually these are meetings with others and scheduled phone calls/Skype calls. And usually meetings generate stuff, actions, projects and so on. Time between these scheduled actions is available for my NA list.

My NA list represents what needs to be done within about one week from now, or sooner. I do add dates when it is sooner, so my task manager (IQTELL) can search for them. When my NA list is long, I do the dated actions first to make sure I meet my deadlines

In my Weekly Review I make sure there is a good balance between my scheduled actions (that surely will generate more actions) and the time in my calendar available for actions on my NA list.

Good luck and thanks for sharing!