Whoa-kay then... I sincerely wish you all the best in your endeavour.
When my children were 7 or 8 years old, I had them in Aikido, and the instructor, who has since deceased, taught my children basic gooseneck wrist locks, and throws or moves ustilizing the elementary wrist locks. My children have grown up without any ill effects on their wrists, elbows or shoulder joints.
This thread illustrates fears that people have for teching children effective Anger Releasing Aikido. Overcoming these exaggerated fears seems to be quite a challenge.