Thanks for all the kind words everyone! This trailer will be hauling mainly clothes, spares, and other not-too-heavy items. Probably 30lbs max. The trailer was originally rated for 80 lbs.
Just to test it out today, I put a 3 gallon water jug on the front, and two 5 lb. weights in the bin. So that's right around 30 lbs. No problems, in fact it rode better loaded than it did empty. No worries about side loading or lateral stability.
One thing is clear, though... bumps and potholes taken at speed definitely stress the attachment point of the wheel. I'd say this setup is pretty solid, just watch the bumps!