Well, we have the factory manual here. That is your first start.
As for making it louder, the "loud pipes save lives" is dubious, at best. Most of your sound will still be directed behind you and so doesn't do a whole lot unless you are right next to someone. Anyways, if your stock exhaust is still good, find a donor exhaust to chop up. Change the muffler to something with less baffling and you got a louder bike. A slip-on with a removable baffles is easy to find, you just need to get a slip-on with the right I.D. to match the pipes O.D.
As for touring, you will be hard pressed to find fairings. A universal windshield will do fine though. I put one on my 78 and it works very well. Most mount to the handlebars and that can be goofy in cross winds sometimes.
Saddlebags can be easily fitted with some clever mounting. Find a set of bags you like and fab up some mounts.
The ride IS the adventure. The destination is just to get gas!