Unfortunately, you would not be starting in the position of a "normal male," as both males and females have rudimentary breast tissue - in rare situations cis men can even lactate, for example - and it's that basis which allows trans women to develop breasts naturally. Basically, there's a "seed" of breast development present in everyone at birth, and it can flower into full-grown breasts once per person. HRT will trigger that growth once, but if you really did have naturally developing breasts, that means your body's own estrogen already tripped that switch (which is unlike most cis men) and it can't be done twice... unless it was only partially finished *and* some of the glandular tissue survives. Hopefully your surgeon will have good news for you on that front.
Nature tends to work that way, in that everyone has the genetic blueprints for both possible outcomes, but you only get one shot at each - trans men who have top surgery don't regrow their breasts, trans women who have bottom surgery don't regrow a penis (thank GOD!!).
As for implants, I hear that sensation can sometimes be lost, but isn't always; if you still have erotic sensation after your first surgery, maybe your odds are better than average.