One thing about BB's fragerence calculator is it only lets you pick one fragerence to calculate, if you want to blend , you will need to experiment and do the math to decide how much of each fragerence you want. A good way to experiment is to use one drop of oil per part of fragerence, and soak it up on a qtip or cotton ball and drop it in a plastic baggie for awhile. It will give you an approximation of your blend.
So for example, if you want to blend the turkish mocha and vanilla, then two drops of mocha and one drop of vanilla, or two drops of each, to simulate your percentages of each oil. Then adjust as necassary.