So the standard RC explorer Tricopter has a diameter of about 635mm, at least that is what I measured on mine. I'm thinking I'll cut my booms down so that it has a diameter of about 450 for now, just to see what that is like.
I picked up a Naze32 board at Flite Fest 2015 to replace my HK NanoWii board and I just got it all set up and ready to go. This thing was a breeze to set up. I used David's stock firmware (for a standalone naze32 board) and it is perfect right from the start.
I did switch from 10x5 props to 8x4. My setup is way too light for the 10 inch props and my disc loading was too low. The 8x4 props feel much better, though I may try ones with a slightly higher pitch. Right now it will hover at about half throttle.