You might what to take a look at this," www.The hitch store.com"....look to the far left then go to "towing Info" down near the bottom and check out all three listing, alot of good stuff about towing..
If you want to eliminate sway look into a Hensley Arrow antisway hitch. I towed a 33 ft V-lite with an 06 Expedition using a garden variety load leveling hitch and found the trailer was very hard to control. To make a long story short I am now using the Hensley Arrow and it does as advertised - It eliminates ALL sway. it is pricey but worth it. I would not tow another camper without it.