This packet trick builds just as shown in the video. The scripting is perfect and there's only one
counting/handling that is involved. If you don't want to carry a deck to end clean, you could
probably do a switch in your pocket or lap. It would be better to have the deck to "randomly" select
the 4 aces to begin with.
I think the reactions from the woman in the video will be
typical. A lot happens quickly and each count raises the surprise level.