There are 5 automatic bids that make teams outside the top 10 kind of irrelevant, this includes the ACC, Big 12 and spot to the weakling conferences because that's how playoffs tend to work. So, there's a very real possibility that you have to finish top 9 to make it into the playoff and probably at least 10.
If you look at last year as an example, only three teams make it in with two losses under that scenario, that would be Missouri, Oregon, and Penn State.
Ole Miss and Oklahoma are both left out with 2 losses. So, Alabama could get in with two losses, but it's far from a sure thing and we'd need to cheer for Vanderbilt from here on out to try to up that SoS in order to improve that possibility.