Maybe I'll try that, would it be better to use FA custard as well?
Not needed IMO, I'd just eliminate the Custard completely.
If you're not looking for a Strawberry Custard that is.
And if going in that direction I'd drop both the VBIC and Sweet Cream.
Strawberries & Cream should be a primarily Strawberry/ies and Cream/s mixture.
Strawberry Ice Creams should be Strawberry/ies + VBIC + (optional)Cream.
I like:
2% INW Strawberry (or try your Strawberry combo with this)
4% VBIC (either CAP or TFA)
2% Dairy Milk (1-2% Sweet Cream, or Bavarian Cream may work too)
1% INW Biscuit (2% FA Cookie or 2% CAP Sugar Cookie V1 are other possible subs)
1% FA Marshmallow (optional)
Its more like a Strawberry Ice Cream with a hint of waffle cone.