Sounds pretty nice, I'll try it out.rotation is the key as vaping the same flavour for too long risks vapours tongue where you will lose all taste.
you could try the marmite test from vampire vapes. you will either love it or hate it. heizenburg is a dark fruits berry and aniseed and is quite strong. a warning though is it can linger in tanks for months even after a thorough was out. i use one tank just for that flavour.
also if you do buy some 18mg and its too strong then just buy a zero nicotine of the same flavour and mix them both together and it will lower to 9mg
good luck and keep us posted how you get on.
I didn't know that, I'll start using the apple chew one and rotating them then.