all pretty standard kit, are you doing to own another car after after GTI, as all that stuff works on other cars!
Will definitely be worthwhile doing this yourself and buying the few tools that you will need. Main dealer wanted something like £500.00+ to change my discs and pads all round. I just bought all the parts for about £170.00 and done it myself. That looks a good guide by the way follow that and you will be sorted.