Oh Man,
That sounds great!
It is one of my best inventions! I also make it with dark chocolate pudding instead of white chocoltae pudding in the mix. And if one likes psitacheos, making the two pudding mixes using instant pistacheo and vanilla yogurt, with the same peanut butter-coolwhip topping is great for the nutty flavor (add one more rounded tablespoon of peanut butter though).