breedlove,
@Q1
Just roughly try to match it. You'll give it your own twists at some point anyway.
Good luck.
@Q2
Well, I use 11s (on the travel guitar, see cover - 13s on the full-size, still works) and so I don't expect it to be the gauge (lighter strings tend to break quicker) I've noticed the full bend. I've always done a half step bend because Justin does exactly the same thing as far as I am aware. I also bend the G up, as well as the D. I think you either need some lube in the nut or get it filed out better by a luthier (I have yet to do that). If you're looking for alternatives I suggest doing a hammer-on and a pull-off instead of a slide.