While there are many who love their cartos, in or out of tanks, there are some "tricks" to getting the carto properly filled and primed. If not done correctly, it's easy to burn the stuffing, at which time you will probably need to replace the carto to get rid of the bad flavor.
You might be ahead to look at any of the "clearo" style toppers, like the Kanger PT series, or equivalent. Easier to fill and maintain, nice vape, look great on a Tesla.
And rather than wait and search for the "ideal", why not just jump in with something like a variable voltage Ego type battery? While not replaceable - after a long bit of time, when the battery no longer holds a good charge you toss the whole thing - they have an initial outlay quite a bit lower (no extra batteries to get, charger is cheaper), work well, and are smaller.
And try some flavors at your local shop to find a few that taste good to you.
Then start vaping. Put the cigs in an unusual place, so they're not handy to get at, put your vape gear where you normally put your cigs.
It's a process for many, and the important part is to be in the process, and count the cigs you don't smoke
