Welcome to the party, Cagirl! Vaping is a whole different beast than pulling that smoke from a pack and "flicking your Bic". There will be some trial and error in this endeavor. But, you nailed it with mixing down the 18.
I, too, wished I'd have hit this forum a lot harder before I started buying stuff - got quite a few things that I don't really like/use any more because I didn't do homework first. Now, I'm sailing - plenty of GOOD options at my disposal.
Finding the right juice is definitely the most difficult. I finally got into DIY so I could have it "my way". BUT, I didn't know what that was for awhile.
One thing that "helped" me was the realization that I'd spent enough money on vape-y stuff that I was no longer willing to spend money on cigarettes. I just vaped through - as long as I have "something" in my hand, and I get the same tactile sensations (hand-to-mouth, inhale/exhale) I've not had another cigarette. I have thought about it - just wondering what one would be like - just never acted on it
Patience, Grasshopper

Lots of folks here willing and able to help.