You have received terrific advice. Listen to it.
Only thing I would add is if going with air bags, use a seperate air line, for each bag. Do not share an air line asn this allows air to travel, form one bag to the other bag, when stressed. WHich, is the exact worst moment for this to happen AND defeats the purpose of the air bags.
I prefer tuftruck springs, first and always, then better shocks, then air bags.
I think Timbrens are a complete waste and gimmick, at best.
IF not oloaded beyond OEM SPrings and shcoks limits, timbrens will hardly ever be actually engaged, stricking the axcle, or resting on it, under a laod or over a bump.
BUT
Let take it further, if too much payload for the OEM springs, then the timbrens will ride on the axle, essentially removing the springs an dshock form teh equation. Only when road conditions cause a bounce and allows timbrens ot lift ooff the axle, would the suspensions engage, until the payload forces the timbrens back on to the axle with a spne jarring how ya doing m8ee. While it will hurt yoru spine, liek heck, think about what its doing to your axle.
You know, the part that runs your tires and makes your truck, go.
That;s why upgrade the springs, first.
then shocks.
then, air bags
then tires
keep each element of the suspensions s oit can function, as designed, just improving each components capabilities.
I want to avoid bumpstop hitting, or worse, riding , on the axle or, in the case of an axles-less tiny trailer, the half axle.
My understanding, is the weakest link, on our 1500's is a pin, inside the axle, that holds the half axles, in.
It's what limits our payload, more than any other. That pin can only handle "X" stress and once e assembly
whatever trim level and options one gets, minus that weight from the pins limits gives you the payload.
agaian, my undersanding and Lord know, i could wewll be wrong.
I doubt you tongue weight will be 420#. Read someone suggested 600#.
Think that is far more likely and would even go as high as 750#.
how the trailer is loaded is paramount to the tongue weight number.
which is why we so often suggest getting weighed at a CAT scale.
They are , literally, everywhere.
WIll try to find the methodology for gettng accurate numbers.
cannot remember it, off hand but its only 3 or 4 weighs.
If you ahve not yet purchased a WDH h itch, then research them.
A quality wewight distributing hitch can be a lifesaver.
Also, head over to youtube and do soem research.
Let me get you started;
Proper trailer tongue weight improves the vehicle and trailer towing experience by improving performance. Not enough tongue weight or force on the hitch/tow ...
www.youtube.com
At least 60% of the load needs to be at the front of the trailer. If too much weight is at the back, it can swing out and you lose control of your vehicle.--...
www.youtube.com
Two manufacturers wanted to hook you guys up with a discount!!Use code "wanderingweekends" for 10% off of WeighSafe's entire website here: https://www.weigh-...
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Full Disclosure:
I positively LOVE the Equal-Z-er. any of the top 3 are oging to be terrific. Have used a bunch of variations over the decades adn love the Equal-z-er but, you, do you.
If you do not have a ton of towing experience, then go slow.
Towing is 99% sheer boredom.
It's those 5 seconds of HOLY CRAP WE ARE GOING TO DIE that you prepare for.
N one knows hwo they will do until they;ve actually done it.
BUT
setting your truck up is most of it.
set yoru truck adn trailer to succeed, not fail.
Saw a guy towing a trailer and he was squating horribly.
Unsafe. everythign was set up incorrectly.
I pull up beside him, roll my windows aand asked him to pull over and i would give him some pointer and explain things.
His reply was classic.
I've been towing for 20 years, 5 with this rig and I think I know what I am doing.
Me, being me, replied, next time you are at a campground, go
find the guy towing the biggest trailer, but towing it level and ask him,
if you are doing it, right, because anyone who knows how to do it,
can tell, with just glance, you sure as shirt, do not.
Get advice.
Ask other campers at the campgrounds.
Have someone show you how to setup yoru hitch, weigh your truck adn trailer
organise your trailer liek you would a toolbox or garage workbench, think about it and trail and error will get you there.