G'day rookie and welcome to the site. Clearly a great choice of bike
A word of warning, once you start down the custom track you never seem to stop
well this is what I have found anyway.
As the guys said there are lots of places and choices. Braided lines are on my list also, you might want to have a look at the ones from scootworks.com
As for brands well it depends greatly on what your looking to buy and how much you want to spend. (it can get expensive)
So far I have done the pipes, grips, various chrome covers for things, the seat and I have waiting in the lounge room the barons air kit and power commander. Next will probably be the pulleys and the lines, oh and the mirrors.
My best suggestion is don't buy anything from Australian companies such as Zpower you will pay a fortune when you could have just ordered it from the states.
Try westendmotorsports.com meancycles.com as a start but there are many others.
Look forward to seeing you out on a ride soon!