Have used "searched" but still confused

Hi guys, new to the world of skoda and the VAG. I've bought myself a MKII VRS CR facelift on a late 2010. I've got DSG on the car so from what I understand the steering controls are standard. It has the basic radio and in dash cd balero player. Basically I've used the search tool and all its done is confused me with the amount of options I can have. So I'm basically looking for someone with Tech knowledge to tell me what I need for what I want :S

I want the Columbus head unit with sat nav, I then want the bluetooth handfree for my iphone and i want the ipod connection to the head unit. Can anyone give me a list or contact for all the things (i.e. looms, antenna connection, steering wheel control adapters etc.)

Cheers Folks.