Well, getting a Great Artist takes 100/3 = 34 artist turns.
Assuming you're working a mined hill instead, you could also do 34 * 4 = 136 hammers instead. That's more than a complete settler. And positioning your big city perfectly would be even harder than positioning normal cities.
If you can get Code of Laws soon enough, it might be worth it sacrificing a small city with a couple of food resources to get a Great Artist though.
I doubt your second Artist would ever be worth it.
This would work better if you are Philosophical, you could try a Philosophical leader on a lower difficulty level where you don´t need Praetorians.
Assuming you're working a mined hill instead, you could also do 34 * 4 = 136 hammers instead. That's more than a complete settler. And positioning your big city perfectly would be even harder than positioning normal cities.
If you can get Code of Laws soon enough, it might be worth it sacrificing a small city with a couple of food resources to get a Great Artist though.
I doubt your second Artist would ever be worth it.
This would work better if you are Philosophical, you could try a Philosophical leader on a lower difficulty level where you don´t need Praetorians.