Pretty much in the minority here, but it really comes down to your budget. Are you cost constrained and watching what you spend very tightly? Or are you open to some extra cost to get the primo pkg?
That being said, the LED's are a nice-to-have. They are to the modern car what the Xenon lights were 5 or 10 years ago. Absolutely a great feature, and one that I'm sure you'll love if you choose to get them. But, on the flip side, you're not going to spend the next 5 years hating your X5 just because you didn't get them. Plus, if you are primarily driving on well-lit city streets, or do most of your driving during the day, then you're unlikely to notice much difference.
Either way, enjoy the new truck!