Rohit and Dhawan would be the best, Rahul can play at number 4/5 I think. Both Rohit and Dhawan was in good form in WC, I believe that they will cause pressure in WI bowling.
I am also thinking the same but Rohit and Virat had some tiff recently and they brought in Pandey too for the 4th position so they may push Rahul as an opener and Rahul's best performance has been at 4th position only.
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Edit: Looks like Rahul has been dropped from this match. It's a horrible decision when Rahul is in form.
1 Dhawan, 2 Rohit, 3 Kohli, 4 Pandey, 5 Pant, 6 Krunal, 7 Jadeja, 8 Bhuvneshwar, 9 Washington, 10 Khaleel, 11 Saini