lurker's comment:
About GA.
My personal oponion that it is way to late to settle it.
technical note about using GA for culture bomb.
When GA used for bombing it put culture not in one hit, but in 20.
So, in your case 6000 culture div 20 = 300 culture apply 20 times try standart turn formula of applying culture.
Formular is a bit complex, but for simplicity it will look like
20*(300 + city culture/turn)
So, if city produce at that moment 400 culture turn GA will actially poor
20*(300 + 400)= 14000 culture in surrounding ties.
So, the best way to use culture bomb will be by maximising culture production when doing it. In your case it mean runnign castle sysytem and coverting every citisen to artist, bomb and then the same turn return to normal state.
About GA.
My personal oponion that it is way to late to settle it.
technical note about using GA for culture bomb.
When GA used for bombing it put culture not in one hit, but in 20.
So, in your case 6000 culture div 20 = 300 culture apply 20 times try standart turn formula of applying culture.
Formular is a bit complex, but for simplicity it will look like
20*(300 + city culture/turn)
So, if city produce at that moment 400 culture turn GA will actially poor
20*(300 + 400)= 14000 culture in surrounding ties.
So, the best way to use culture bomb will be by maximising culture production when doing it. In your case it mean runnign castle sysytem and coverting every citisen to artist, bomb and then the same turn return to normal state.