Help me to choose an ARDUINO board.

I am going to build a RC car, which will have one motor for power, one servo for steering, one ultrasonic sensor for measuring distance, and one acceleration sensor for measuring acceleration. And I also want to embed a Bluetooth module to connect with my android phone to control the car.
I am totally new to ARDUINO. Well, actually, I just found it out an hour ago. So, I hope you can help me or give me some suggestions on my project. Thanks.

Hi and welcome. Even the most basic Arduino will have enough resources for your project, so look for one based on ATMega328. Size and weight may be important, so perhaps a Nano 3 or a Micro Pro (you will need a usb serial adaptor with that). You will also need a motor controller module with enough power capacity for the motor you will use.

Paul

Look at these:
http://learn.adafruit.com/assets/6122