I know you're an LSU fan too, but their offense sucked last year. It wasn't the rain that caused them to suck against MSU.
An opportunistic defense and special teams group helped them out a whole lot, but it didn't change the fact that LSU was DEAD LAST in total offense in the SEC last year. That's rain, shine, wind, snow, whatever, DEAD LAST.
LSU is not an 8-4 at worst team. They could get there, but I think they are more like a 9-3 at best team, with 6-6 as a worst case scenario, though I'm hoping for 5-7 personally.