Since I've been taking notes on a number of FA tobacco tests over the last few weeks, I'll give an example of why it's best to try it for yourself. Just one flavoring, Perique Black
At 4% is a full flavor without any edges, but still has dark tobacco tones.
At 6% is very light with an interesting background flavor that is slightly spicy.
At 10% dry and spicy with a solid dark tobacco tone, but seems sweet.
At 12% is a bit edgy with a very full dark tobacco taste.
All were tasted after 2 weeks of sitting after being mixed as the taste is completely different when fresh. Used an I06 atty at 9.6 Watts for testing.
I picked this one because each level tasted good, but different. If anyone says that a FA tobacco has to be mixed at X%, it means they have just found one taste that it is capable of. My mixes range from 5-15% for tobaccos and these are the only flavorings that I use fractions of a percent to tweak them in. (Seeing a note like "6.7% total flavoring" is not unusual in my recipe notes for my FA tobacco recipes, but anything else is always in whole numbers.)
Your OP reads like you have a bunch of fun ahead of you...