Will think more on mods and extras and rebuilding coils etc and maybe mixing my own juice when I find a juice a like and get a good starting/fall back point. Think this is going to be the hardest part.
You're thinking smart.
A good fallback is very important to all of us; backup.
For liquids, getting to know the taste of unflavored can be very usefull.
eliquid is basically PG and VG mixxed together with some nicotine and some flavoring.
You very basic fallback liquid can be as simple as PG+VG at whatever ratio you desire; you get PG from Tractor Supply maybe the Pharmacy; and VG is USP grade glycerin from the pharmacy.