My suggestions would be:
Seriously consider automatic - come resale time the maual 200's will be very, very much harder to shift on and a dealer will, i guarantee use this as a reason to knock your px price down.
I think Tel Silver is nice, just a bit of a different hue to the iridium.
Leather, all personal preference, but i think black is the safer bet.
Airscarf and heated seat - a definate - i got the seats and not the airscarf and really wish i'd got it.
Folding mirrors i have and like

Parktronic - I have and don't really like. It's forever beeping at you, so much so that you almost end up ignoring it. I think it would be much better if it was just at the back of the car for reversing - can be handy however in tight spots as the car is quite awkward to judge, esp. the nose.
The zenons are good, but i must admit i did not go for them, i don't really drrive alot on very dark roads and i must say the standard lights are very good.
I would however upgarde to 17 inch wheels, i think these really make a difference to the car.
Spec is always personal, but I'd really think about that manual box.
Enjoy
Regards
Mark