I can see why you would want to downgrade if you’re pulling with a 3/4 ton gas - terrible gas mileage lol in comparison to a half ton, which of course still isn’t great. Honestly though, I love having that extra pulling power. And above posters are right - not all trucks created equal. And the half tons of today can pull a lot more than older ones. And I of course had an older one. And now have an older 3/4 ton lol.
If you are looking at diesel though, you could switch to gas. Despite the mileage being very sad, gas is quite comparable. They’re cheaper to maintain, and they don’t gel up on you. Plus, gas is cheaper right now than diesel to buy. Is it obnoxious to always be buying gas? Yep. But was it a much cheaper solution upfront? Yep.
I only drive a BP, and I’ve done a gooseneck once. Gooseneck pulled a lot easier, but with a small bumper pull, if you aren’t great at backing, you can turn around quite tightly depending on setup. I agree with getting the stability device installed for wind. I don’t have one and it’s a pain when it’s windy and those big trucks think they need to fly by you. Also take into consideration how much tack area you need and if you’ll ever sleep in your trailer.