Welcome to the forum.
Since you changed the wires and plugs and still have a rough idle, your problem might be the IAC (Idle Air Controller) located next to the throttle body. It could be dirty or malfunctioning.
If the air-conditioning is colder when moving it's because the air coming into the condenser is being cooled by the incoming air as you move. You might have a problem with one of the speeds in the fan motor that cools the condenser/radiator when your standing still at idle.