Yes, that's what I meant by outside the aircraft. Looking relative to the earth surface.
But the inverted aircraft may have a tail up-load relative to the earth surface (same direction as wing lift), if the wing aerofoil section has sufficient negative pitching moment characteristics.
The aeroplane will have the same static stability as when right-side-up.
And yes, the wing 'CP' will be forward of the aerodynamic centre.
I was trying to indicate that the tail does not have to develop a load opposite to the wing lift direction for the aircraft to be stable.
KZ8