Not to offend, but what a silly question! How could more black ever look bad on a motorcycle?
black out the cases also.
Personally I would just do the exhaust and fit the "vintage" shrouded Hagons.By all accounts the Hagons are also a huge improvement in ride and handling over the stock shocks.
....SEE! if you black out one thing it ends up being the whole bike!!!! If only uncle sam paid me a little bit more.
use alot of chain lube and the rear will do it for you.