enjoy it and sit on the cash, is one good idea
However
Move to the inside, try a
JCW shift light, 85 quid and easy enough to fit yourself,
JCW sill protectors, KCW gear knob and handbrake,
JCW dash,
JCW Downtubes,
JCW Steering wheel covers, Scanguage, Colour code the spotlights black, Paint the calipers red, black out the S badges, fit aero wipers, black out the rear windows, colour code the arches, even try debadgeing the list is endless.
End of the day, your car, get inspiration from others and then make your own mind up. Remembr some owners put flames up the side, Not most peoples taste, but might be yours, so in short without sounding rude, make your own mind up, theres enough ideas on here and you must know what you like as you bought the car yourself in the first place