It looks like either I didnt see it or AI added a flight on Sunday such that we can depart Mumbai at 5am on Sunday and return at 8:20pm. I figure that means we can be in a car by 7am in IXU and will have roughly 12 hours. I'd be curious if anyone has ever done an epic day like this?

We'll be leaving and returning to a comfortable hotel in the airport vicinity in Mumbai, so that should cut time on the to/from airport car rides in Mumbai. A marathon day, but honestly I could not find a hotel in IXU area that I was all that happy with so getting in and out the same day seems preferable.