I have a recipe along those lines. It's good, but I do need to take the time to balance it out; the Strawberry can be a bit intense after a while. Let me draw upon the old memory banks... I'm vaping it currently, in fact.
Strawberry (not ripe) 15%
Blackberry 5%
Sweet Cream 5%
Vanilla Custard 2%
Cotton Candy 3%
The Blackberry is there for a bit of tart, since the Strawberry is slightly lacking in that regard.
I had the custard up a few more percent, but I was looking for more Strawberry than custard, and lowered it. I'd probably raise custard to 5% and lower Strawberry to 12%, as a first step in that direction; it's mostly strawberry at the moment. I haven't made it without the Blackberry, but I'd like to.
The GF commandeered the house dripper recently, so I haven't had many opportunities to experiment lately

Some made it to the US from Fasttech, so I should be able to experiment more in the next few days.