Well, I personally don't think "he" is the right term. I would understand if IT gets reassignment surgery, then "he" MIGHT be appropriate, but I don't think if I walk around calling myself the opposite sex that I was born as (assuming i did not have reassignment surgery yet), all pronouns in the entire world referring to me should be reversed. If there is this much debate, then don't use pronouns at all. Just say Chaz or Chasity.