I wouldn't have any other hitch than a B&W. It's made right here in America with American steel. Best customer service in the industry. As far as the air bags go, it will be trial and error. I went ahead and put an onboard air system in mine, but start out with the truck empty. Most people leave 5-10 pounds in them when unloaded. Then when loaded with 5er, the pressure goes up to around 25 pounds or so. Might be enough for you, may not depending on pin weight. When loaded with a TT, the pressure doesn't go up that much. Get you a portable air tank and keep it with you for a while until you find the right combination for your setup.
