Hi Matt, I'm new around here & only been vaping about 5 months, but from your posts, I think I had an easy route into this compared.
I think the machine you got given wasn't such an easy starting place for a 1st mod. As far as nicotine goes, I thought I needed max strength, I had been smoking over 40 years, started 12ml, went up to 18ml contrary to advice, next down to 6, now things were getting enjoyable, recently dropped to 3ml and it's definitely a smoother better experience and I haven't noticed any nic craving, zero
My first mod was an Innokin Kroma A with a Zenith mouth to lung tank with factory coils & they need minimum priming, just a tadge in the wick holes and leave installed in a full tank for 10 - 15 mins and it's perfect.
I use high VG ( 70-80 vg ) In both my machines and it's a good mix, with a good machine you should get good flavour even though high VG & decent cloud.
Don't be put off, it will settle down and cost wise, you can do this on the cheap, lots of good low price juice around once you find decent supplies and there are also lots of second-hand kit. You just got to find the right combo's.
And as a final point, I don't have any experience with Smok but you do see a lot of haters.