Toryin;
Be careful. If the AI researches Space Yards 2, it will retrofit all of its Space Station SYs into useless hulks. I've required Large Space Stations for AI station construction to get around this, but it hugely slows down their early game. No better ideas, though.
As for the Cultural Centers, there's nothing particularly wrong with Minor Spaceport Cities, even if they take a while!
*EDIT*
I am utterly confused as to why my Mining Colonies are building Energy Transmission Lens.
