I have a friend who uses "transsexual" specifically to mean gender-misassigned, as distinct from "transgender" which is a blanket term that also includes non-binary and genderqueer genders; he also describes himself as cisgender (gender matching body, because innate gender is the only thing that determines gender, therefore a dude's body is a dude's body no matter what it looks like). I like that.

By the by, I hope your chosen meatspace name isn't Jack, because then every single trans dude I know would be called Jack. XD Not that you'd necessarily tell me anyway, but I'm rooting for Christopher (Kit) just because of that.