Thank you, I will do so when this bottle is closer to doneIMO 6mg is too low for a 4 pack ex-smoker.
You won't find many commercial juices at high nic apart from salts which many don't like.
Why don't you PM @ivc_mixer . I'm sure he will make you juice at high nic. He makes good juice at a very fair price. He could also advise you regarding the strength but I would suggest 12mg. I would have suggested even higher but you are vaping at nearly 60W.