Very well done! As a Middle-Earth nerd I love threads in which people Show their take on specific aspects of that mythology. And the Balchoths are an important part of that.
I personally have always pictured them more barbaric, more Hun-like, but I still think you have collected a great mix of models and have done an impresive job painting them. The elements work well together and the result is really convincing. Two thumbs up!