It's possible I know to do at least 8 or nine packets. Just do the five faces, then put one into the sybilism grip in the left hand, then do the 5 faces again (six packets) then off the chin (7p) then you can squeeze 2 or 3 more in there for a display.
But if you want to make it continuous, 7 is the most possible (or at least the I've experienced with)