Hindu Kush is a classic Indica, with up to 20% THC and 0.1% CBD. If adding more CBD makes no difference to the effect then THC/CBD ratios don't mean very much.
I do this all the time. 1:1 ratio of cbd and thc flower. I Ilke the effects better. Less peaky, and the cbd brings more/different effects to the mix.
The only downside I can think of, is extra work mixing the salad, and you don't get the true flavour of the thc strain that you are vaping.