I have no idea what the number will be. But remember, most of Antarctic ice is based on land. So if it falls into the sea it adds to the liquid when it melts. Whereas when the ice melts in the Article the net sea level change is negligible.
But; don't forget, that the land UNDER the ice has been greatly depressed because of all the weight above it. It will rebound and cause even WORSE 'flooding'!
Or not...
For when the land goes up THERE, it will SINK elsewhere, thus LOWERING the seafloor; relieving any water level change.
DANG this stuff is COMPLICATED!