I'm in your part of the woods. Lowers can be got from the U.S, Memphis Shades sells them, but you can get them cheaper from some U.S online stores. I ordered a screen online and it turned up in a week. I got a 17" as I didn't like the look of the stock screen and I wanted to be able to see over it. It was from the Motorcycle Online Store. Accessories for the C109 are hard to source in Australia.
I have a TRE on the way from GMan.....Did you find a real difference with the bike after installing it?
When you de-baffled did it make any difference to the bike? Is it too loud? Fuel mixture balance affected?
I was contemplating drilling the holes, but not complete de-baffling.