Don, thanks for the feedback! Very useful. I’m definitely going to do a lot of testing beforehand.
The subject matter is a 12-hour performance art piece, so it’s sort of a one-shot deal. Also: it’s a piece about endurance, so a continuous 12-hour shot would be in keeping with the artist’s intent.
I’ve never tried hot-swapping cards before, so I should try that out and see how it works.