Well, the easiest would be the same as the other artifact game. If people have strong preference though, I could be convinced to set one up on a different map.
19 players for less than 190 land that's rush heaven.
And considering Antilarium is minimally balanced for 9 land players (some players get all the waste provinces around him, but at least capitals are far away), 19 players would mean someone has nothing but waste close to his capital.