Instead of third ac economy coaches add third ac coaches in coach composition and i have given green flag to your created train and also remove pantry car coach from this train because this train is overnight train generally people don't order food from pantry car in overnight trains. And you should change the time table of your created train according to this time table and this time table will be more practical -
Vskp 20:30 vzm 21:25-21:30 pvpt 22:38-22:40 rgda 23:25-23:30 ksng 01:23-01:25 Titlagarh 02:00-02:05 kbj 02:33-02:35 Raipur jn 05:20-05:30 Durg...
more... 06:05-06:10 rjn 06:33-06:35 Gondia jn 08:15-08:20 nitr(NSCB Itwari jn) 10:30.
And coach composition of this train should be like this - LOCO EOG B5 B4 B3 B2 B1 A1 H1 S6 S5 S4 S3 S2 S1 GS GS GS SLR total 18 coaches.