[JRTJH]

If I remember correctly, your trailer is about three months old and you haven't towed it for any appreciable distance yet ???

If so, I'd make sure you've got a quality weight distribution hitch with sway control, get it "dialed in" properly, weigh the rig to make sure you're "good to go" and then get some "feel for how it performs" before you start spending money on "upgrades that might not be needed"... Towing isn't about how many "gizmos" you can install, but on properly adjusted basic equipment and properly sized tow vehicle for the trailer weight, length and towing conditions.

You may, in the future, find that you need to upgrade the suspension, but if you do it now, you'll never know if it was necessary or just wasted money. If you use the system you have, you'll be able to identify any "shortcomings" and then can tailor any specific upgrades to "necessary deficiencies" rather than a "shotgun approach" of "let's try this and see if it makes things better (without knowing whether "better is even needed")