2009 Z4 options

I'm looking at leasing a 2009 Z4, manual transmission 3.0 with the Premium Package, and that's about it. It doesn't have the iDrive. I use an iPhone and want to be able to select and play the ipod music through the system. The Z4 unit I'm looking at doesn't have the iPhone $150 option or the $400 phone interface option. What will I be able to do to play the music? I don't want to have to read the phone to select songs, etc. It just has the basic radio/cd player in it. Can either of these factory options be installed by the dealer? Finally, I like Sirius/XM but the radio in the car is not configured for this. Is that something the dealer can install after the car is built. Thanks for your input.