ManPear,
I'm sorry to say, from your photo, I'd estimate it to be impossible.
However: you look somewhat feminine.
Why not look to make a clean break? Promotion is immediate following surgery. Use enhancers if necessary in the build-up to the promo, so it's not a visual shock.
Or, just transition socially at that time. "ManPear" is gone on last day (before surgery), and "WoManPear" starts the new role in management.
Does that make sense? Is it possible?
Second thought, though: On a Yahoo group, there is a contributor who has DD implants. He works as a nurse, and the breasts are quite evident. No one seems to care. He also is quite male, visually. So it's possible to "DILLIGAF" it ("Do I Look Like I Give A F*ck?") and manage.
The thought I have is, you don't seem to have a big chest at this point. Hence the "build-up" I suggested, if you can't socially transition to presenting as a woman.
BTW - a bra WILL be necessary.
(Yahoo group was TSDoItYourselfHormones group, I think, and Manboobs (?) might have been the user ID. Join, check photos, if you can tolerate the atrocious F-up Yahoo Groups has become.)
-Dianna