Quick update. Made it back home with the only thing "breaking" was the black plastic fender coming off. These things looked flimsy and sure enough, one of them could not hold up to the wind on the highway and popped over the (washerless!) screw heads.
I just took the entire thing off and threw it in my pickup. I'll get it repaired under warranty to see what they'll do to improve it, if anything. Kind of silly to put those eyesores on an otherwise nice trailer.
Also, posted a few pictures in this post:
I should also say that the entire trip was 3300 kms (aboout 2000 miles)!