Nice one, sounds like you're getting a nice spec!
A couple of things, yeah Tornado Red can look pink in some shots, but in real life it looks great as long as its polished every few months. It was the same with my old Polos and Corrado. I wouldn't refuse to buy an orange car, it means it got more layers of paint on it!
When I looked at MK5s, I found that the Monza IIs looked a bit too big and the ride comfort was compromised with the 40 profile tyres.
I'm not saying don't get 18s, but don't get rid of the 17s as you might find the ride a bit harsh.