You can change the sweetness by changin the marsmallow values.
Marshmallow -> 1 ideal sweetness
Marshmallow -> 1.5 extra sweetness
If you don't own any WS-23 agent, just add 3.50 Koolada, it's fine but you won't get the mountful iciness.
Yes, you can also swap Fuji apple with any other flavour you like. I mostly prefer TPA Green Apple with the same values, you can also use TPA Pineapple (Juicy) to get Fcuking Flava Freezy Pineapply experience..
It's a Shake n Vape recipe but will definitly better if you steep 2-3 days.