I don't know your taste buds, so the percents question is hard to answer. Since you can taste the vanilla in all that VG, I suspect that you should taste the strawberry as well. But, strawberry is a pretty demure flavor even at 10% in 90+% VG.
I have about five different strawberries, not to mention all the other fruits, and about 6-7 creams. When I started, I had no idea of the differences between all the creams, so I made test samples of a single fruit, it was strawberry, and each cream. I steeped them naturally because not all flavorings react the same way to "modified" ways of steeping. I sat with two of the same RDAs, tested and wrote flavoring nuance notes.
As a DIYer, the number of combinations is endless.
With the "soft" strawberry, I would go to 14% and 1% french vanilla. To see the difference from the current sample save what is left. Then when the new sample, which is also made with distilled water and VG, is steeped. Try them both.
I make 2.5ml samples for trying recipes and flavorings. I bought a lot of little bottles for steeping.
Good luck!
I have about five different strawberries, not to mention all the other fruits, and about 6-7 creams. When I started, I had no idea of the differences between all the creams, so I made test samples of a single fruit, it was strawberry, and each cream. I steeped them naturally because not all flavorings react the same way to "modified" ways of steeping. I sat with two of the same RDAs, tested and wrote flavoring nuance notes.
As a DIYer, the number of combinations is endless.
With the "soft" strawberry, I would go to 14% and 1% french vanilla. To see the difference from the current sample save what is left. Then when the new sample, which is also made with distilled water and VG, is steeped. Try them both.
I make 2.5ml samples for trying recipes and flavorings. I bought a lot of little bottles for steeping.
Good luck!