After further reading:
Q2 Correct, no native PAw traffic voice on FX
Also
https://www.pilotaware.com/fx -> Accessories (menu item), is spelt incorrectly.
If anyone has feedback on external antenna positions, I'd be grateful. Some in out group have suggested farther back towards the tail to make the arc shadowed by the engine smaller. I'm more in favour on lowest part of the Fuselage, under the passenger seating positions, to put the engine 'higher' and better forward visibility. (and 50cm away from existing transponder antenna).
With the internal antenna we could try different positions, but for external, I'd prefer to keep the number of holes drilled in the fuselage to a minimum.