I am 6' tall, with bad posture!
I fit the bike just fine, but I run rearset controls, and my bars are slightly forward of the trees.
Here is me and my scoot, I like to ride tucked into the wind, this was probably about 90 MPH, so they are a bit blurry...
My bike is actually shorter than stock as I De-Raked the frame and lowered the forks 3.75"
If you are gonna run traditionally mounted bars, I'd for for 1-2" stretch.... It will still be short and fun to throw around.