hey vendman,
Welcome to the asylum.
I am about the same size as you and I came from a sportsbike, so I had to get used to the changed riding position also.
I would not rush into any changes.....give yourself some time to adjust. It did not take long for me. I find it the most comfortable bike I have ever owned. The seat has moulded to my shape and I am no longer crushing the wedding tackle against the tank.
As for pipes, it is my opinion that all the aftermarket pipes sound very similar. The thing is they all sound great, so it is a matter of finding one that suits your budget and appeals to your sense of style.
Have a look at this thread:
Aftermarket Exhaust Summary
Do a search for Zard, and you see something a bit different. There are plenty of different systems out there.
Goof Luck