I would suggest 3% caramel, 1 drop/10ml black fire (at the most), then whatever tobacco you are adding. You can go higher than that with the caramel, though.
The glory might not be doing much at 0.5%. I have a bottle at 3% and it’s about right for me. Peanuts with a hint of tobacco. I think at 0.5 only the peanut will come through.
Are you ordering from chef’s? If so as well as the dnb I’d add a bottle of the virginia absolute. 3% virginia absolute, 2 drops per 10ml dnb and 1 drop per 20ml black fire will do your tobacco base.
I think the fa caramelnis really good. It’s very clean and just tastes like caramel. Others I’ve tried always have weird off tastes going on. For that reason, it’s great for mixing.