This question seems to come up a lot with new riders with new bikes. There's nothing wrong with wanting to modify, upgrade or just add a little bling if you are so inclined. But... my biggest suggestion would be to ride the thing for at least 3 or 4 months before you start thinking about what you might want to change. Like I said, there's no problem with upgrading, just get to know your bike for a little while longer before you start dumping money into it. You may find that many things you thought needed upgrading now really aren't such an issue 4 months from now.