Pat,
Actually the tongue weight figure that I think is most often used by trailer manufacturers, hitch manufacturers, and many others in the RV/trailer industry is 12 to 15% of tongue weight for proper trailer balance. Your tongue weight will probably be a little higher than the estimates you were using.
I think you can safely and effectively use a hitch with 1000# bars. The bars can be tensioned for heavy tongue weights and relaxed for lighter trailers.
The next consideration is whether you will want weight distribution capability ONLY with your hitch assembly or weight distribution AND sway control. Some hitch types offer weight distribution only, a couple of hitch types offer both.
The two oldest and best known hitch brands in the industry are Eaz-Lift and Reese. They both date back to the 1950s or at least the 1960s. Eaz-Lift hitches offer weight distribution only and an additional friction sleeve assembly must be added for sway control. You can review their website. Reese offers, in my opinion, the best hitch assembly on the market in it's dual-cam weight distribution hitch assembly which combines both weight distribution and sway control features in one hitch. You can observe the hitch and see how it works on the Reese website. Prices are comparable and both are readily available.
Other hitch brands are mostly either minor players in the market or more recent brands that copy the old tried and true brands. In some cases they look identical to older, better known brands but with lots of towing the owner will discover that they are made of different metal. Points of high stress will wear more quickly in some of the brand X hitch assemblies compared to an Eaz-Lift or Reese. Yep, they are little cheaper and lots of them are in use. The difference shows up over time with high mileage and heavy use. You get what you pay for with trailer weight distribution hitches. The Hensley (sp?) hitch stands alone in claimed effectiveness, complexity, and cost. It is probably a fine hitch but not widely used.
I don't sell them, don't have any stock in any of the companies, and don't care which one you buy. I own a fifth wheel now but owned traditional travel trailers and used wd hitches and sway controls from November 1972 until I bought a fifth wheel less than two years ago.
You know the old saying..... "you pay your money and take your choice. "
Harvey