Fifth Wheel Towing Limit and Axle Ratio 3.73 vs 4.10

Worst case you can swap gears for $1,500 (per axle). For all I know you could choose 4.30+ if conditions dictate. Limited slip is only needed in low speed low traction situations. Either way carry a tow strap if you will be camped on mud, sand, grass or snow. Although should not be a huge concern with 4WD.