Okay, if you want to vape something a little more swiftly, berries usually don't require as much steeping time, but if you want something creamier/more custardy you could try combing it with Vanilla custard and cheesecake crust for a Strawberry Cheese cake? IDK. I can't really give specific percentages, but I'd say a bit less of the strawberry and Cheescake crust with more of the vanilla custard? (Maybe in total around 7--10% max, to start, until you see how your tastebuds react.
Or, chocolate and vanilla custard to make a chocolate milk? That could work. Again, under flavor a bit, and if you can't taste much 48 hrs or so in, perhaps add a bit more? (I find it easier to add flavoring than remove it). Again, target approx. 10% maybe.
Those are a few initial thoughts, they aren't recipes and you can get more complicated, but given what you have, those two honestly sound easiest to combine. You may wind up needing a hint of sweetener or you may not. I didn't start with sweetener but I do find that using a HINT of it in my mixes usually improves them.
I am sure other folks will have more suggestions and ideas. Good luck,
Anna