As stated earlier, if the Ags go into the final regular season game at 9-2 then it is not inconceivable that they will be in contention for a West Division Championship, which as you admit makes them in contention for a Conference Championship and a National Championship.
Not saying they will defeat LSU to get to 10-2, but ending up 9-3 isn't out of the question either.
And I never said the Ags would be in contention for a NC. I believe they will fall short at 8-4 or 9-3, but 10-2 isn't out of the question nor is a division championship and conference championship game ticket. At that point you're on house money and I would just enjoy the ride.