What's the best way to break my rig while towing?

I guess the verdict is that an extra 350lbs on the already 5000 lbs isn't a big deal.

It's like having 2 average size people added to the load, sitting in the crew cab.

The reason I put this in the towing forum is it's a towing question.

If I put the 350lbs into a trailer, is it better or worse, given the trailer has its own weight addded to the GVWR? It lightens the axles, but adds more weight overall.

I'm not sure what's right here which is why I had the thread in towing.