10ml is actually a lot since they are so concentrated. Some single flavor mixes might be in the 2.5% range but in a mix a lot of the flavors are 0.50%.
The Cheesecake is probably too strong, I made a mix with a lot of other flavors and only 3 drops of cheesecake in 50ml and all I could smell and taste was cheesecake for the first 2 days, finally settled into the background after 7 days steeping. I hear the baked bread is also real strong but haven't gotten that yet.
the Caramel is not too strong, not likely it is going to replace my normal caramel but will get some use.