upgrade ur DV, remap and a milltek. job done
Then add either an S3 brake upgrade or at least uprated pads.
Lowering springs wouldn't go amiss either

Revision D DV is about £40 to buy
Remap about £500
Milltek about £1100 for the full turbo-back system or £400 for a Catback
Brakes around £500 for an S3 front and rear upgrade
Springs about £150 plus fitting.