Your front tire is a 130/70-18 and your stock rear tire a 180/60/16. You have the option of selecting a 180/70/16 for a 10% higher profile to give you more ground clearance when cornering plus it will be a bit easier to put the bike on the centerstand. It will also correct the speedo to more accurately show your exact speed rather than overstating it.
How noticible is that "higher profile" as far as handling goes? How much does it really raise the bike? I think I'm tall enough to be able to handle it, or is it really a significant difference?