Hey, look at that, I could do a two-pass to paste first values and then format. Thanks Chris!

For the record, I got the same error as Renata when trying to paste format followed by values. The other way around worked great though.
I agree with Chris, we should settle as soon as the settler arrives, the chances are much higher for Hari or Harapura to become Taoist. No sense wasting valuable turns on that slight a risk.
Talking to rolo on IM, he had a look in the source code for colonial maintenance. It depends on a lot of factors, I'm too tired to look them up and do the full maths, but a few things are noticeable:
First of all, colonial maintenance is only applied to cities not in the same "area" as the capitol, which means other landmasses. That Shaka happens to be bisecting the area makes no difference.
Second, colonial maintenance is a slap-on penalty on top of the normal city maintenance for distance and number of cities. The two don't affect each other.
Third, the colonial maintenance is calculated per-area, and depends on the number of towns in that area. The basis is the number of towns squared, so for one town there's almost no penalty, a slight penalty for two and three, but steeply progressing from there on.
When I'm a bit less tired I'll have a look in the XML for the missing values of the formula.