Tyre pressure is not standard. IIRC its something like 35-40 quid. However, it has been much maligned on this forum as not worth even that!
Of the others, I would say the 18 inch Monzas are essential. Will set off your Xenons perfectly

ACC worth it if: 1) you do a lot of motorway miles and/ or 2) you have really poor roads around you and/ or 3) you fancy doing a track day
Cruise - personally I don't see the need. Again if you do motorway miles, then will be great for those average speed limit zones
Lux pack - gives you folding mirrors - however won't work on the key fob, you do manually from inside the car
Sunroof - lets in more light, however rare for the uk to have much sunshine! Air con will keep temp down in the car.