A lot can be down to personal preference. Some prefer the wheels spaced and say it handles better, likewise some prefer no spacers and say it handles better.
With the standard wheels, you'll be wanting either 16mm front spacers or 20mm front spacers and 10mm rear hub spacers (to have it sat nicely), although I've recently changed to 5mm fronts and 10mm rear and much prefer how the car handles like that tbh, it feels a lot more direct and sharper, but it will also depend on suspension and overall car setup.