1000 land, 1000 infrastructure, 2 oil or coal plants, 3 banks, 3 shopping malls, 2 stadiums, hospital and police station and subway is the optimum build. If you have the money.
You want about 12000 soldiers coming off beige (2 weeks in). Need an airforce by the time your third city is complete and ideally a naval yard and at least 2 spies after your fourth. Tanks are good for defensive purposes as well.