re: As an LSU fan, who should I be pulling for in Auburn vs A&M?

It probably doesn't matter THAT much, but I would say it's marginally better for LSU if A&M wins. That would help to put LSU above Auburn in the bowl pecking order come season's end. In that scenario, LSU would have a chance to end the season as the SEC's third-most desirable team, even assuming a loss at Alabama.