Ahh. At least in modern Japan very few people of your likely age enjoy
being addressed as -kun. In fact, I know at least one Japanese man who
says that he hates -kun. You call baby boys -kun. Kin-chan used to call
young folks regardless of gender -kun on his show Kindon. (I think that
was the name of the show.) Further, you do not normally attach honourifics
to your own name in either Japanese or correct Anglo-American culture.
Physicians are actually quite rude in this regard. Post-nomina initials
are correctly used after your own name (at least on calling cards), but
these are not normally pronounced.
Your Humble Servant