Pine is one of the many flavors that cannabis can have.
It wouldn't necessarily be associated with any one particular strain and many have the pine trait.
When I was a kid, my guitar teacher told me this.
He said when he rolled a joint with all the saved roaches, that it was the best high of the bag.
Since I've always liked smoking out of glass, I've never tried this out.
They would probably work for trace minerals but I doubt they would have any NPK values to speak of.
So in short, no I don't think multivitamins alone are enough to sustain a healthy plant.
I've tried a lot of different ferts for foliar feeding and found that Shultz plant food plus liquid plant food to be excellent for this application. It works as well as the expensive stuff.
Heck man, just go with it at this point.
I mean you're dealing with good genes, so I'm sure that the offspring will be great.
And you won't have to order seeds again for a while.
You don't want your soil to become completely dry between waterings.
But it does need to be a good and dry a couple inches down before watering again.
The weight of the container is a good indication of when you should water.