Adjusting Handlebars
Welcome! I am relatively new here myself (and to riding). I bought my 2009 C50 in May of 2011. About six months ago I adjusted the handlebars to tilt them up to an even 180 degrees (I didn't like how they tilt down). Nothing at all had to be adjusted with the cables. However, you most likely will want to loosen up your rear brake lever and clutch levers, and move them up slightly. As for the aluminum housing for the clutch (not sure the exact name( and the brake reservoir, they 'can' be tilted to match the rest of the parts, so they look normal, but this required unscrewing both parts, moving them slightly, and drilling new 'lock' holes in the bottom of the handlebar, which is what I did. You should be fairly technically inclined before I would do that though. I have a mechanical and electrical background, so far me, it was pretty easy. I will upload some pics when I can.
Just recently I added 2" chrome risers I bought on eBay. These are more complicated to install, and you will need a second person to hold the handlebars, once they are loosened, otherwise, you will bang up your bike when loosened. The process of adding the risers is a 'little' tricky, but do-able, Overall, I am VERY happy with the leveled out handlebars and 2" risers. You probably don't have to, but I did open up the headlight housing, cut the wiring to the forward controls, and solder in 8" extensions, so that the cables wouldn't be too tight. (Must be electrically inclined).
Next project for me is a BatWing....