Drop 2 grams from what ever is in there. But is that 7800 with her on it or you? big difference! Also, what I also did with the ex when she was at those wieghts LONG time ago, and the kids, I would dial the suspension in for me. In other words, I got the balnce all right. then I would back all 4 shocks off evenly. Get behind them and watch how it handles. Keep back the shocks off evenly til you could see on the shafts that they are using full travel and then crank them all back up about 1 turn. tough to setup up a sled when you weigh 250 and they weigh in at 150 or less. But that is what worked for me.