We would advise adding a little pudding mix at a time and taste-testing as you go, though. The joy of this dessert is in its palette-cleansing nature, and you don't want to overload your cream with ...
Nilla wafers: The iconic vanilla cookie pulls double duty as both the base for the crumb crust and used whole between the mousse and pudding layers, softening as it chills (a nod to the classic).