Mine is a DSG too.
A remap on a K03 will produce between 280 and 300lbft. I'm running 415lbft on the same spec DSG gearbox.
The DSG box is much stronger than people think. If you had a manual, you would need an upgrade clutch at some point, wheras with DSG it will be happy to continue on the stock clutchpack.
If you do remap an uprated DV would be a good idea. the revision D OEM DV is a piston type DV rather than the original diaphragm type you will have now.