;-) I am still relatively new to fpv. Am considering to build a second nose for a FPV set-up. I had a quick look at what you are using for the headtracking but this is way too complex for my limited skills. Also, so far I had the camera mounted to the tail which allowed to see the aircraft (in particular the wings) against the horizon (just in case the camera moves).
Anyhow, the Mozzi flies awesome. Pretty much the best I have built of all the Master Series.
Definitely want to build one after seeing yours!
(Doubt mine would turn out that nice though lol)
I think she'd make an awesome FPV bird, especially with headtracking but would be a little hesitant to go through the FPV learning curve on such a pretty plane. If you do go FPV I'd also suggest a flight controller with RTH. (For simple ive found i like the Zohd kopilot lite) If something goes wrong with the video feed it takes a suprising amount of time to find your aircraft in the sky and regain your bearings. A simple click of the RTH switch and you'll at least know she's not going to do the death spiral before you get her under visual orientation.
Also, I've found a simple pan and tilt can be a lot of fun even without the complications of head tracking.