2001 X5 4.4i Hidden Hitch, Phone, Satellite questions

[DallasX5]

I've searched the Forum and have decided it will be better for me to have the hidden hitch installed on my 01 X5 since I have the parking sensors in the bumper. However, I'm not sure where to buy the hitch. I'm assuming it would be better to buy the hitch online and have it installed as oppossed to paying the dealer for the parts and labor (?).

Additionally, I do not have the Nav system- but I have the built in car phone kit in my console. I'm told by the dealer there is no bluetooth for my car available. I did see some posts in the forum regarding retrofits, but they all seemed to have the Nav system. Can I do ANYTHING with this built in phone thing and/or the buttons on my steering wheel- or is it basically worthless?

One more thing Since I do not have the Nav System, is it a big deal to get the integrated Satellite system (i saw the blitzsafe stuff) to work on an X5?

Any advice on upgrading the toys in my 01 4.4 are appreciated- and if anyone in the Dallas Texas area can provide assistance with installation of any of these things $ please let me know.

Thanks in advance for your help