Kentucky Blend No. 7 sounds really good.
My personal solution to the various permutations of Vermillion River's tobacco flavors is to keep on hand a good stock of Kentucky Premium (30-60mls), plus small sample bottles of the other flavors (so I know what the "real thing" from VR tastes like). Then I add diy flavorings to make my own blends. Now, whenever I want more Kentucky Vanilla, I simply add one of the many vanilla flavoring concentrates I have to some Kentucky Premium. Same with apple flavorings for Kentucky Applewood and maple/maple syrup flavorings for Kentucky Maplewood. I haven't tried peach or cherry simply because those are not flavors I love.
I make only small batches of the flavored varieties (5-6ml), which allows me to experiment over time with different flavoring concentrates and their effects. Doesn't save me much money in the long run, but it sure is fun. Sometimes the concoctions I make don't measure up to Vermillion River's originals, but other times they're just as good, and occasionally even better (to my palate)!
This thread is so interesting that I think I'll add some bourbon flavor next and see how that goes to approximate Blend No. 7. (I don't have a sample of that, so I won't really know how close it is.) I've already made some Kentucky Amaretto, however, and the addition of a little of that almond liqueur flavor was very tasty.
Kentucky Premium is one of the best tobacco bases I've vaped (along with Natural Tobacco by PrimeVaping, Vita Bella by GoodEJuice, and Tobacco Absolute).