No not a memoir - a screenplay. Clearly you've chosen the right narrator! I think you've got the beginnings of some solid and important stage directions written in there, so that's my vote on medium.
I considered doing some (local) improv recently now that I'm largely post-sitch. It's amazing the fear we lose as we meander forward! If I had to have a favorite part - that's it. The immense shedding of fear.
