With a tri axle trailer its possible for a 10k load all depending on
how the tri axle is loaded.
Moving the pin weight forward a couple of inches doesn't transfer as much weight as you might think. I've found the longer wb crew cab trucks don't transfer weight forward at the same ratio as a short wb truck (140" vs 160" or 170" wb).
A sagging truck with a dot number pulling a big GN trailer will attract attention quick. Many haulers use air bags with the in cab controls to keep the truck level.
When I hauled commercially usually they waved me through and just checked my paperwork as many jurisdictions don't bother trucks with less than 10k axles. There was always the exception on occasion though.
I haul stock 2-3 times a month with a 16k triaxle with my 2500 Dodge quad cab short bed and a older 3500 DRW crew cab 454 gazz guzzlin' 4x4 chevy.
I can partition off the big stuff over the trailers three 6k axles to keep under the 2500 trucks drivers.
Best of luck on your hauling venture.