Assume there will also be a $600 slug for metallic per GTI?
That would put a fully loaded R with DSG on road at around $65k retail, which means it should be possible to get one discounted to something around the $60-61k mark.
That seems to still leave the $8-10k odd gap to S3?
(I've excluded any LCT, I'm assuming this is still coming in under the fuel efficient threshold?).