Wotcha and welcome - that looks a tidy example I'll bet it was a massive difference going from a Punto to your wagon! Dont think you'll have too many problems bring that to your desired spec.
loads of things you could do dependant on what you fancy - my 2p, look at the brakes, get some braided hoses + possibly different calipers and discs to give better feel / bite and a good service, have the injectors cleaned decent panel filter and check when the fuel filter was last changed.
You could look at an ECU remap as the standard cars will be set up for economy and emissions so a revised fuel map even on a standard filter and exhaust should give improved lower down torque making the car feel more responsive