With the options you've mentioned and with the team USA and eco credits, you should be well under $50K - I'd say you're possibly looking under $46K. Invoice with the options you listed (bluetooth, iPod adapter and smartphone) comes in right at $50k and then taking away $4500 - well you get the math (all numbers assuming a 2011 35d)

Honestly, I don't think you need either the smartphone integration nor the iPod adapter. You can listen to your iPod (or BB for that matter) via the aux-in port in the center armrest. I've been able to also listen to music via bluetooth for devices that support A2DP (like the iPhone or possibly your BB).

You might also want to consider the roof rails and the spare tire (so you're not tied to run-flats down the road). Those are inexpensive options ($90 and $135) that you'll probably find useful down the road. And depending on your climate, I'd also think about the cold weather package.