If it turns out to be a naked eye object it will be great. Predicting magnitudes 2 years in advance is risky for comets. I understand this new Mag. prediction is due to an improved orbit and the exact date of perihelion is uncertain.
It looks like the Southern Hemisphere will have the best chance for viewing when the comet will be its brightest. When it comes into viewing for us northerners it will be fading. Of course this will change slightly as the orbit is confirmed in the months to come.

Good news for the telescope makers and NEO awareness groups.
I'll be looking forward to it.

SteveS