Congrats on the bike! You're just a week behind me.
I'm a bit shorter than you, but basically have the same complaints about the windshield and leg space.
My first mod was the Mustang seat, which dropped me an 1", making me feel more "in" the bike. There is more bend in my knees as a result. Nothing horrible, but I am looking forward to adding some hiway pegs soon.
As far a windshield goes, I was looking at the Klock Werks 14". They make a 16" shield as well, and one fellow your height says it does the trick for him.
I'm sure others have mentioned it, but like 53driver suggested to me, get your seat sorted out before trying windshields. A 1" difference at the seat does change the way the wind hits you quite a bit.
Enjoy that bike!