Remap to go stage 1 which will see around 300-310bhp
Lower it 25mm on H&R springs
Replace the ARB's with H&R to stiffen up the ride, improve handling and more or less get rid of the understeer.
Panel filter uprated
cat back exhaust
After that I would invest in a clutch and replace standard flywheel as they are like chocolate
After that then I would go stage 2
Full system exhaust from Milltek, Blueflame or MV Sport for example
Intake system from ITG, Evoms, Forge or Dbilas
Stage 2 remap
After that you can go stage 2+
High pressure fuel pump - APR or Autotech
Stage 2+ remap
Another mod I would encourage anyone to do is install a Forge short shift kit. Expensive but I absolutely love it!! Makes the gearbox feel more manly lol