LOL, Ann! Can't say I've had your particulsr dilemma--regular Haveneers will understand...

That said, however, I have run into sitches when I find myself being confronted with a whole new set of choices for a planned project--usually 'cause I find something that changes my thinking. Your case is a good example... Thanx for sharing!
Part of my approach to finding the 'new', depends on how much material I have--in your case the pp & CS. If I have just enough to make only version, I go with the idea that popped up! If there's enough to make more versions? That's when I go into really creative mode--using my wealth of accumlated techniques.
And... I ask myself the 'big' question... "How important is this project to me?"
