This goes without saying so let me say it anyway
:
I think the strength of analog you were smoking is as important as the number of cig/day.
I started out smoking Marlboro Reds back in the day and smoked a pack a day. When I quit analogs I was smoking "Ultralights" but I was smoking two to sometimes 3 packs a day.
I started out on high carts but they gave me a headache two hours in. Now, if I vape anything more than 11mg over the course of the day I get to feeling pretty crappy, although I do use a few drops of 16mg in the AM and I try to taper down to 0 by night time.
However, I'm still not sure 36mg "straight up" is a good idea for anyone. Just be careful, you'll find your "groove". Better to go through 2 bottles of low juice to start with than to OD on the high.
(My opinion...your results will vary.)
Edit: oooooo.....spooky $ amount in my banner