I'm 19, owner my 2.0L 8v for a year and a half and its great.
DSG intake, Panel filter and exhaust and you will see a fair bit of performance improvement.
Elephant has been cheapest 2 years running for me so if you havnt already done the insurance thats the one to go for
Problems you'l probably encounter are:
1. OIL!!!!!!! CHECK EVERY WEEK!!!! 2.0L 8V drinks oil!!
2. MAF, ive been through 5 in the past year and its just gone again this week
3. HT Leads, tend to go, i've been through 2 sets.
Other than that they are pretty sound. I've had trouble with head gaskit and exhaust manifold but that was probably because my car hadnt been services in 50,000 miles lol.
Great cruising car, mega comfortable, get decent MPG if you keep the oil topped up and dont horse it