hi
that looks like a nice piece of software, hows your multiwii copter flying ?
I was making one, but I had a dodgy accelerometer from my nunchuck that caused a lot of crashes , so i ended up getting rid of multiwii and putting a diydrones board in it which i had lying around at work.
The ground station for that coudlnt be simpler, it is made to just hook up the xbees and work off the bat. I dont know enough to help you create your own telemetry system, but I do know a bit about cuads, and I have gone through the basics of flying the APM board, Im just starting on GPS flight and woudl be happy to offer any help i can
good luck