9 games is very easy to schedule. The "traditional" schedule for 16 teams was pods of 4 that worked similar to the NFL schedule - every year you play everyone in your pod (3 games), you played everyone in an permanent horizontal line (3 games), and the remaining teams in a rotating pod (3 games) (3+3+3=9). The permanent horizontal line teams could be used to preserve rivalries like Georgia-Auburn and Alabama-Tennessee, because I see Georgia in a pod with SCAR, Florida, and Kentucky and the 2 Alabama and 2 Mississippi schools in another pod..
Pure guesswork on pods:
1. Alabama, Auburn, Mississippi, Mississippi State
2. Tennessee, Missouri, Vanderbilt, Oklahoma
3. Florida, Georgia, SCAR, Kentucky
4. LSU, Texas A&M, Arkansas, Texas