To not "blindly" work out you need a specific goal. To most people "blindly working out" provides the benefit of general fitness increases. If you feel you cannot progress any further with doing what you are doing, you need to pick a goal that relates to your cycling, and take it from there.
Great shape in general would imply that, while you would be fit, not all of your fitness would relate directly to cycling, and some of said fitness (lots of upper body mass, maybe?) may even be detrimental to your cycling.
So what do you think you REALLY want to see improve in your riding?