As have I mate.
Garry, the 324 upgrade was what I was originally going to go for, but after doing the numbers on it I'd rather spend the extra and buy a full kit.
I can't get all that stuff you've mentioned for $800. It's more like $1200 + for me, and if it's that much I'd rather spend 1k extra and get fresh everything, including a better caliper, but that's just me.
Now, I've got an email back from Bozz Speed and he didn't recommend going the 355mm with the 4 pot as the 4 pot is quite bulky and has trouble fitting inside a lot of rims, so I'd be making sure you use the template on the site to be sure.
Shipping wise they've told me it will cost us what it costs them, which should be around the 150US mark.