I think as long as the Jets get in (and let's face it, they should), whomever they play, Indy/NE would be a Saturday game. What time depends on the Giants, believe it or not.
The Giants (should they get in) would play the NFC East champ. I could see NBC wanting both the Jets and Giants as their double header. They would secure the NY market for the evening.
If they have Pats vs Jets and Giants vs Eagles/Cowboys, it would be a coinflip as to which game is 4:30 and which is night because Dallas, Boston, and Philly are all top 10 tv markets. However, if they have Indy vs Jets, that would almost certainly be the 4:30 game and the Giants would be at 8:00.
As for Sunday, CBS has the 1:00 game and Fox has the 4:15 game. As such, Fox is almost garunteed to show the Seahawks game on Sunday.
If I were a betting person, I'd say it is 50/50 between saturday night and Sunday at 1:00 as of right now.