Love the Firestone Bags!!! They work great for me, I run 40-42 PSI and the Gladiator actually ride better!!! Redarc trailer control, 4.88 gears and a well-balanced trailer. Install is super easy, suck all the air out of the bags, put the cap and use zip ties to fold over. I have done few that way with no problems at all. Enjoy....
I pull trailers all the time. I have four of them and then I have a boat. Been doing it since 2019 and 212K miles with my JT.
For four years, I've had the Airlift HD bags for the Ram 1500 on my Gladiator. They're a little bit longer in case you decide on a lift. But, because they're HD, they're a little bit stronger. But they also ride a little bit stiffer as well. https://www.airliftcompany.com/shop/60818HD
Last year, I changed over to the Airlift Loadlifter Air Spring. They help with more weight. When aired up they work good, but you can't leave them aired up for everyday use. They're stiff with no weight or when not pulling any weight. https://www.airliftcompany.com/shop/57415
Either option is a good choice. And if you ever decide to do a little harder wheeling, you still can.