you can do BT and Sat using factory parts - BT is plugged in the trunk, you will need to use a special plug for the Voice Recognition plug, the factory module should be of 13th generation... check bimmernav.com...
the Sat is done using factory module, and factory harness, that plugs into the CD changer...

The iPod - aftermarket units, such as Dice and whatever - do a search here, to see what other people used to integrate into the car's system...

The factory option for BT is not cheap - it might offset you close to a grand, the Sat - probably $200-$500... since you don't have Nav, you need to find a unit that works in your situation, do a search. i have some part numbers but not sure about the non-nav cars. for the cables you need part # 84 11 0 141 977, 84 11 0 141 978 and you may consider the slim antenna that can be fitted into the spoiler, part # 84 11 0 390 239.