Hi, this is my first post in this forum. I'm a C&Ver/roadie but my cycling has expanded lately to utility, and I'm about to build a 2 wheel trailer. It would be used to carry dog food bags, plastic chlorine cans, 2-week groceries, etc. Max load shouldn't be over 40 kg, speed no more than 20kph, max distance 10 km, always on flat paved roads.
Now I have a pair of 26" low end MTB wheels in good shape (and I'm a bit of a cheapskate

). Some say 26"s are too big, CG too high, stress in corners greater, better 20"s or even 16"s. But on the other hand, I think big wheels roll easier, and speed would be fairly low. What do you think about it? Could it work?
Thanks in advance.