Done a couple of other mods, had the windows tinted.
Fitted red LED footwell lights to come on when the headlights are on. Gives it a nice red ambient glow at night.
Full interior LED kit from t8ups and ice white fogs.
Also gave the brake calipers a quick coat in black as the silver it was starting to flake off in places.
15mm spacers fit virtually flush on the back arches, but you could get away with 20mm on the back. As for the fronts I wouldnt go more than 10mm, but I didn't see any 10mm hubcentrics when I bought mine.
Although it may depend on what wheels and offsets you are running.
Mines are the 18" s-line 5 spokes but painted in a dark grey metallic finish.