Well, TFA coffee flavors have not been my cup of tea, so to speak. I tried, I really did - and I know those TFA flavors appeal to some people, so it might work for you.
I use FlavourArt Espresso for nearly all my coffee mixes, adding just a touch of it. It's a very strong flavoring I use sparingly, pure espresso but not bitter or burnt. I never ever drink or vape black coffee. When I discovered how strong FlavourArt Espresso is, I learned to mix everything else first. I usually add 1-2% of it. Sometimes I use FlavourArt Tiramisu instead, which is also strongly coffee flavored, but with some chocolate, more sweetness, a bit of vanilla or cake if you focus hard.
The one other coffee flavoring I've liked is Nature's Flavors organic Coffee. It's easily overwhelmed by other flavors, so it takes more. I use it for plainer mixes (just add cream and sweetener).
For cream I use FlavourArt Fresh Cream. It tastes like plain unsweetened cream, makes a very creamy coffee added at 2%. I sweeten with flavors as often as with Sucralose or Ethyl Maltol. I might use any of these: FlavorWest Salted Caramel, FlavorWest Butter Pecan (awesome sweet addition to coffee!), FlavourArt Cocoa, various vanillas, pie flavors, nuts, sweet cinnamon, Capella's sweet raspberry, FA Irish Cream (mmm!), any Amaretto... ahhhh, my kinda coffee. I'm sure black coffee purists are gagging at this, lol.