You'll be fine at 6'3". I'm 6'2". You can meke it more comfortable with a very minor mod of sticking particular Buell pegs on and a longer Honda CBR600F gear linkage rod. I done it and it helped a lot. I found my knees didn't fit inside the sculptures of the tank.
Other than that I'd get an SV. The Blandit isn't called so for nowt!
Welcome to the pleasuredome!