I'm on my third travel trailer with a fifth-wheel thrown in as well. My current 30-foot travel trailer does NOT sway at 70 mph, and I have no sway control. I also have a one-ton dually, so weight distribution is not a concern.If sway is not a problem...
With a small trailer like yours and a 3/4 ton truck, I wouldn't worry about sway control or weight distribution unless you experience problems in that area. I have owned three travel trailers, and only one of them had serious sway problems.
My problem has always been national parks, not state parks. Texas parks, for example, most of them, will accommodate anything you can drive or pull in with. Full hookups, some even have cable tv. I have just downsized from a big fifth wheel to a 28...
I have twin Honda 2000s, and they work well. I think the Yamaha inverters will work well too. They are relatively quiet, and I think that's worth something. There are all sorts of noisy cheap generators out there that will run your AC. For how long, ...