You're not wrong, but our OOC schedule this year compared to SMU's last year is night and day. With no context, I think the scenario you posted earlier (split Florida/Stanford and 15-3 in the AAC) would get us in pretty easily. I think we'll be rewarded for playing so many tough OOC games away from home. As an example, our loss last night actually got us a 9 spot improvement in the RPI.
The bigger concern for me is whether or not we can actually get to 15-3. We have a 22-game stretch ahead of us where we can't really afford any bad losses at all, and a loss to anyone other than Florida, Stanford, Cincy, and SMU would be a bad one. Are we really going to go 16-0 in the remaining games we're "supposed to win?" The way this team plays offense, we're not just going to win all 16 of those games comfortably. A handful of them will come down to the wire where we'd be one bad call, bad bounce, or corner three-pointer away from an ugly loss.