I'd take the machine's word for it, trackman units cost tens of thousands and are probably the biggest jump in golf technology since the iron byron machine. They can track the club and ball hundreds of times faster than video with very tight tolerances. If the military can track and shoot down missiles going many times faster than the ball, the same technology even in a commercial form is going to be able to track the ball pretty well. Notice in tennis matches how they can electronically track the ball to within 1mm to determine a point, for example.
Also, I doubt what you're feeling or intending to do is actually what you're doing. I can set up with the ball off the toe, for example, and still hit the center, then claim that my clubs have the sweet spot out on the toe. But if I threw impact labels on there I'd see I'm actually just compensating on the downswing because I subconsciously know how to strike the ball properly at impact. You know how to draw the ball, in terms of muscle memory, but it's not happening the way you think.
As far as hitting down on the driver, it goes higher because of backspin. You want a lot of "dynamic loft" perhaps a bit more than the listed loft on your driver, and a "spin loft" around 10, plus an Angle of attack in the positive range. Makes the ball fly farther by a lot.
5 degrees open sounds about right for a largish draw, unless you like the ball to end up 30 yards left of target. You're starting it out to the right so that there's room to draw towards the target. The start line itself is mostly the face angle, and the ball curves in the opposite direction of the path. So you should be 5 degrees open at impact, starting the ball about that far to the right of target (a push) then your club path is enough in to out (more than 5 degrees in this case or else it will be a straight push or push fade) that the ball curves to the left of the start line back to target, more or less.
Your pro's a dope.