Everyone has their own preferences for discs and pads, I've used Mintex for years and never had any problems.
I've got a rewind tool I've had for many years, it's the cheaper type with only the two sizes, but the smallest side is really still too big for the rear calipers on the mk1. It works, but you have to take care. Not sure it the mk2 are different, as I've not had to do them yet, but I suspect they will be very similar.
Now, I think would invest in one of the 22 piece kits on ebay, they're only about 14 quid delivered, and should cover all your winding back needs.