I am a native Chinese speaker with experience of teaching Chinese as a foreign language, while my boyfriend who helps me here has 6 years of formal Chinese training, actually 3 and a half formal and rest just by being in China 3 years and self studying by immersion technique. He went through all sorts of Chinese textbooks and is well acquainted with teaching methods in and out.
I don't think you will find anyone more suitable for your job than the two of us.
Good luck in any case!