Welcome to the rocketholic world from the high north. The only mods I have done so far is to put on a flyscreen and a rivco rack. For the moment i'm waiting for my Raask exaust A lot of people in here are changing there shocks....Dont feel to do that my self. But you can learn a lot by reading the accessories forum Best of luck.
Welcome vjs. Shocks are a must...the stock ones are dangerous in bumpy curves because the rearend will skip sideways...I got the 12.5" Progressive 440's and they're good. Also check out the Rivco exhaust flange covers...and Rivco handlebar risers if you're stretching too much to the bars. Other than that, just whatever suits your riding style. 8)