The 204/214 cam has had great feedback from a lot of people using it. It isn't radical and idles nicely. The only draw back I can see in your case, is that you have the stock turbo, heads, intercooler, and torque converter, so you may not see the full benefit of the cam. It tends to pull harder in the upper range of the RPM's.
Yes, getting the heads ported and polished as well as going with the larger 1.77 intake valves will help the cam perform better, but it will work with stock untouched heads.
The CC 980's are the recommended valve springs.
FWIW
Unless your stock cam is toast, or your motor is already torn apart, I wouldn't go diving into a cam change. There are lots of other thing that you can do to the motor first. To sound like a broken record...Lot's of guys have run into the 11's with the stock cam. This motor is not like a SBC, where a cam change makes a huge difference.
IMHO. A good port and polish job of the stock turbo, a Duttweiller neck on the stock intercooler, Power Plate for the plenum, "good" chip and fine tuning, etc... would be better first steps to make before a cam change. (refreshing the valve springs is a good thing though.)
Paul