Welcome to the loony bin Stacks. You're right, the Gen 1 Fazer 1000 is still a great bike and perfectly capable of doing long fast days as well as anything else out there in the market today (as long as you're not on a track).
If you're touring, with luggage and/or a passenger, I'd definitely go for a shock upgrade. People here will recommend Hagon (good, value upgraded shock) YSS/Nitron (more of the same, but more money) and others...and I wouldn't knock any of them (I'm over the moon with the Hagon on my FJ1200)............ but for value, I've found Devilsyam's R6 shock/dog-bone kit that I put on our Fazer 1000 is the dogs danglies !!
There are plenty of racks that pop up on eBay and a few Givi ones pop up quite a bit there and on here etc for reasonable money. There are plenty of cheap, decent top boxes available that fit directly onto Givi racks too (eBay and local bike shops).
We use Oxford soft panniers on both of our Fazer's and they're great, but again, there are usually panniers and mountings turn up on here or eBay quite regularly, so best of luck in finding something.
For belly pans, try Pyramid Plastics, M & P/Demon Tweeks, or Powerbronze as a start...there are more (Moorespeed and others !!).
All the best.