I would try to learn on an iron (say 5 iron) rather than a driver, since you have to learn to "hit down" on the ball and "pinch" it. It'd be much easier to learn on an iron and translate the swing to hit a driver than vice versa since you hit slighty on the upswing for a driver.
If you learn to swing with a driver, you will most likey also try to hit your irons on the upswing and you'll be a big mess. You will also hit many more iron shots on the course than a driver....
Take regular stance, then rotate your body clockwise (if RH) so your feet are now perpendicular to your target line so your back is facing your target.
Then make practice swings down that original line along the left side of your body. It'll force you to turn your right hand over through the impact zone. Make practice swings like this, then take your regular stance parallel to the target line and hit the ball.
Those kids are only 15 years old, when I was 15 i didn't care about any of that crap, all I cared about were cars and girls. (and yes, I played golf at 15)
I didn't care to learn swing technicalities until well after college.
Anyways, to answer your question, I put myself at a 6 on your scale.
I see it as physics, and understanding how to consistently deliver the clubhead to the ball through the use of simple motions. Not many people understand what's going on in the swing to know what they're doing wrong...
But to answer your question, I think to:
1. develop a repeatable swing is more hand-eye coordination and understanding the swing.
2. score well (HC < 6) you need practice your butt off.