When you say cities do you mean pop 7 to 12? At size 12 with 3 lux and a market. plus temple should be fine.
A temple give one content and you start with one. Market + 3 lux add four happy faces. So you now have 4 happy from market, the temple takes the content and makes it happy, so 5 happy. One joker make one more happy and you are good to go.
6 happy can handle 6 sad. Now if you could find one more lux, so need no entertainers. You can drop the entertainer by using the lux sliders and could even get by with no temple, until you piled up war issues.