Hot shot weight plate???

What axle does the trailer have.?
Triple 7k, or 8k.
Tandem 10k, or 12k .
Guessing the trailer GVWR is 24,000 lbs based on the decal..

 

That's a heavy ### 39ft trailer. As in, it weighs 2k lbs less than my 48ft Fontaine combo flat.

My old 40ft gooseneck was roughly 2k lbs lighter than your trailer. Also running a srw pickup is no bueno for weight. You'll max out your rear axle real fast with any type of load that has some weight to it.

 

That was fit'n too be my next comment when he responded.
His truck shows 6200lb rear axle. My hotshot scaled 5900 on the rear empty, ready to roll. OP, you need a dually, or stay under 26,001 gross..

That being said, I'll still help you get it registered right..

Also my 40' Loadmax weighs more than my 48' Chaparral dropdeck.. LoL

Bobtail & empty truck & trailer

 

Correct, you get apportioned tag for truck. Put the maximum weight of the combination, GVWR truck + GVWR of trailer..
You said something about farm, maybe you can run farm tag on trailer.? For common/contract for hire carriers, we get a token or permanent tag for the trailer. Just ask the tax collector or dmv for that. In FL a permanent tag cost like $115 bucks, good for life..
Ok so..
Truck 10,000 gvwr
Trailer 24,000 gvwr
Tag it for 34,000 gvwr on your apportioned plate.
Those are the #'s DOT man are going to look at first..

Next while in combination, (truck coupled to trailer) I was never hassled about slightly exceeding the trucks GVWR, as long as the axles were not overloaded. So if you cross a scale with 5,100lb on steer axle, & 6,200lb on drive, no one will hassle you over it. Not saying it's legal, but the 4years I ran a small truck I wasn't bothered about that. You will most likely always be exceeding the trucks rear axle rating with a load on the wagon..

Now that being said, according to the data tag on your truck, you have 20" wheels on there. If load range E, should have a tire capacity ~7250-7500lbs. Some DOT MIGHT go by that #, some MIGHT not. It's a gamble..

I'd load up all the gear I was going to take with me, & go scale it. See how much payload is available on that rear axle. It won't be much..

Goosenecks generally put 20-30% of gross trailer weight on the trucks rear axle. See where I'm going with this.?
20% of 24,000= 4,800lb
Let's say your rear is ~3,000lb bobtail.. Add that 4800lb pin weight
Your at 7,800lbs on the rear. Not good in your case. Imagine it now at 25% or 30%..

"Oh, well I see hotshots load the over the trailer axles all the time.."
Well, they are fools!! You need that 20%-30% of pin weight on the trucks rear axle for traction, especially in inclement weather, hilly or muddy terrain. Go down the road at 34k gross, with only 6,200 on the rear, not only will it ride awful, the tail will be wagging the dog, & your a jacknife waiting too happen.. Really should get yourself a dually, or don't put more than 8k to 10k lb on the deck of that wagon..

hops off soapbox

 

Yes, left pic is empty truck & trailer ready to roll. Full fuel, clothes, cooler, tools, straps, chains, binders, tarps, all that jazz..

Right is same, but just the truck with full fuel, clothes, cooler, tools. Most the other gear is in the trailer boxes..
This was for a 2012 ram dually, & 40' Loadmax. So you will be lighter empty than I was..


It used to be possible to uprate the axle capacity. Probably still is.? I do believe you will have to pay someone to recertify it. Find a local frame & spring shop to inquire. I have personally seen a 1999 2500 dodge pickup with the door tag recertified. It went up from 6084lbs rear axle weight to 6830lbs. That was with helper springs, air assist, & larger tires. At the time, 265/75r16 had a capacity of 3415lbs, so that's all they could go up to..