i stripped threads on a quando hub in two short weeks... arg.
get some red loctite on the cog and lockring, tighten those suckas down real good (but not TOO hard cuz you can strip those threads like that, too!), and probably run a front brake, and you should be fine...
that said, an IRO set wouldn't cost you much more, and they are, in my opinion, excellent, well-built, tuff-as-nails, inexpensive wheels. i dig mine.