Ideally train should have below pattern/allocation of coach.
1)Sleeper- 40%.
2)3AC or 3AE- 30%. only 1 category is enough,if route has demand than run dedicated AC train with extra fare and extra speed.
4)2AC + 1AC combo should be 20% as demand of 2AC is increased .
5)General...
more... should be converted to 2S - 10%