The bus pirate uses a PIC processor. If you can find the right software and libraries you might try it. But I have no experience with PIC processors at all.
This is the link? : https://store.diydrones.com/Full_ArduPilot_Mega_kit_from_Udrones_p/kt-apm-02.htm
If you buy that you have: absolute pressure sensor (barometer), gyro, accelerometer, GPS.
That's only 4 sensors, for a high price.
If they come with good explanation and libraries, you can have it working in a short time.
I think the TinkerKit system in the Arduino store is cheaper.
You can use a normal Arduino Uno, so things don't get unnecessary complicated.
The accelerometer and gyroscope can be the same thing. I have ordered such a sensor myself, so I'm still not sure how they can distinquish between accelerometer and gyroscope :~