cheaper option would be hi-spec 4 pot calipers and discs for around £450 iirc.
or willwoods for 5-600.
280mm discs and pads aren't too bad, and if on a budget,upgrading pads discs/hoses and fluid are a good compromise.
which would cost circa 150-200 if you go for some DS2500 pads/super dot 4 fluid/grooved discs/goodridge hoses.
just need to think VW when ordering some of it though.