there is not much traffic or overcrowding in this stretch.. Further, MP is my home state, and I have traveled through many of the zones.. I haven't seen that kind of mad rush in INDB bound trains during holidays also (as compared to UP Bihar or Bengal trains)
Ya, but since this is day journey, one may find few unreserved people in SL coaches. But they mostly travel short distances.
If still you are worried, pls book in 3A