Excellent. Thank you for all the info! I have a few random questions though.
1) Do normal toggle on/off switches work with the digital inputs of the Phidgets 8/8/8?
2) How can you get info back out of the flight sim to use with the TextLCD module? I have seen mention of something like FS2Phidgets software. Would it be that?
3) Just how versatile is the GoFlight radio? I don't quite understand how it can be used as 2 radios.
Thanks in advance for answering all these questions. It's always nice to have a mentor when beginning a journey such as this.

The first step on the long journey of building a flight simulator has been taken... There is no turning back now!