I'm about that tall and use a Slipstreamer with a vent. It is 20" measured from the top of the vinyl body trim to the top of the shield. (You can adjust it up or down about 1.5" and I have it all the way up)
Much better than the short Klockwerks that was on the bike when I bought it, but in retrospect like most guys I'd like another inch or two.
Or maybe cut it down about 3" and stick a Laminar Lip on it. I loved the one on my old Honda... it moves the air way up and over and you look OVER it not thru it.