I'm 6'5" and i traded my Deuce in on a 2011 Road Glide Custom in March and couldn't be happier. Way more room for taller guys, the Street Glide will seem like the fairing is in your lap. The Road Glide Custom and Street Glide sit the same height and have the same seats.
I put a set of 10" Yaffe monkey bars on about a month ago and my god I cant believe I didn't do that from the start, internally wiring them is a ***** though. Go with the Road Glide you'll love it and you wont be like all the other tools with batwings.