Allright brother, you were on the right track, but the 4th aka the "Perfect" cake with CGS you get if you look at the hint in the notes:
Vibrancy: One ingredient in each step (Can´t mess that up, really)
Euphoria: Align flavors across the cake. This one is a bit trickier, and requires some cooking or baking experience.
Lets check the euphoria on keywords:
Power, Bark, Spicy: Cinnamon.
To make cinnamon align with the rest of the cake, you usually add Milk. Milk is also the keyword for Power (strong bones)
So for base, Cinnamon and Milk with Flour to make the base of the cake. (Flour is neutral and makes for good base, also is filling - Scarlet is a big girl and flour makes for a filling cake You could also say it fills the criteria for Power in a roundabout way.) You do not require eggs. (haven´t used em, got the ending)
Next we have Filling. Strawberry filling is sweet and compliments the previous ingredients, go with Strawberry Jam (Also Sticky and Sweet, altho not mentioned in keywords) Plus align flavor.
Frosting: We have strawberries in the filling and the most complimenting to the rest of the cake would be Strawberries. Chocolate would be going too much to the sweet side. Plus align flavor.
Topping: Keywords Sticky and Sweet + Brown fit for Caramel here, and to add the harmony to that, you add Strawberries that take a bit of the sweetness of the Caramel off, leaving you with a perfectly balanced cake that fullfills both of the girls keywords and is from a cake standview complimenting each other flavors.
Plus since we used all of the keywords, the lust enchancer effect is now active.
Enjoy your perfect cage CG´s for ending 4 everyone.