Most of your list is addressed in earlier replies. The '08 RX does not have an aux audio input so we use an adapter that fits into the cassette deck so we can connect our ipod. You can get a black interior with most of the exterior colors if you're concerned about dirt.
It's always a compromise when it comes to must haves, and I don't see anything on your list that would be a deal breaker. The RX is a great car. It is well built and beautifully fitted out. In my opinion, the NAV/Bluetooth is the Achilles Heel of the vehicle. Unfortunately I learned these things after signing on the line.
My NAV/Bluetooth issues (in no particular order):
The NAV locks out many of the functions while the car is in motion.
The voice recognition often does not interpret clearly spoken words properly.
The voice system is slow and kludgy; the software is poorly designed.
If these are not issues for you, then you will love this car. If they are important, then I would recommend the Acura MDX, which has the best NAV/Bluetooth of any car manufacturer today.
Good luck.
Jonny