Buying jayco jayflight 32bhds 2014. Have ford f-150 supercrew v8 5.4L. With 3.15 RAR. Tow guide says tow max 8500 lbs. camper weight is listed as aprox. 8250 lbs. Some suggest adding air lift bags to. Suspension. Some say upgrade rear end axle ratio to 3.75 for 1100 lbs. capacity. Finally others say go to f250 super duty. Confused!