1 and 2 will pass through Panna National Park,
3 will pass through dense forest and a number of river bridges have to be made
4 won't pass through forest but 2 river bridges have to be made.
5.. Again via forest and bridge needs to be made.
6.....
more... via forest land again.
7.. even if made won't save much time, instead chord line can be made in khairar.
4, 5, 6 is the only route which I think is possible.. generally railway tries to avoid making bridge and rail line through forest land needs environmental clearance and making a rail line through it take even more time to lay..