Noob with various Q's...

[Cockneyrick]

Having bought my "new" A1 1.4 tfsi Amplified Edition car, i'm finding some strange things amiss with it?

So here's a list:

1. Although i have holes, there are no lights in footwell or glove box. Surely they can't be "extras"
2. Car has had a mid box delete, yet it is still seriously quiet?
3. Can anyone tell me size of front discs i should look for to replace with upgrades?
4. I found a loose plug wire in boot, then found plug it goes in to at back of boot trim, what's it for?

Any help appreciated