Also, in the realm of getting hormones prescribed, rather than trying to convince the therapist that you are trans, there is a method known as "informed consent", where you demonstrate a knowledge of how hormone therapy will change you, and that you accept the risks (and benefits).
As I understand it, this is to protect the medical people from being wrongly accused later of "misdiagnosing" you.
fwiw, I have heard that the actors/actresses in that kind of porn "cycle" their hormones...take them until they either get breasts, and/or get a "boob job" (breast augmentation is the medical term), then stop taking them while they're working in the industry. Typically, you'll see a change in your emissions within a couple weeks; after a few months, there'll be almost nothing coming out but orgasms will still be there. (And that's an unsettling experience, let me tell you!

) As I understand it, if you stop taking hormones, male emissions will resume after a short time.
I do not know, as I have never stopped HRT.
I do not know how much of the "male sex drive" (the desire to penetrate) disappears with HRT. I have heard (from the FtM's) that they often start feeling very poke-y, not "slow", but as in "penetrative". MtF's, on the other hand, typically do not want to penetrate any more. Of course, everyone's experience is different...but you should be careful in choosing to believe "oh that will/won't happen to me!" because there is simply no way of telling, except after a few months on hormones.
Also, one's sexual orientation (the desire to have sex and/or a relationship with someone of the same, or opposite, gender) has, in some cases, been known to change (but in other cases, it stays the same). It would be a bummer if you took HRT to get boobs, and then found that you want/need a man to satisfy your needs. Your spouse should be aware of this possibility, however slim it may be.
Please Also note that "man-boobs" and breasts are two distinctly different manifestations. You'll see what I mean if/when you get breasts...the look, the feel, the response of the body to stimulation...No comparison, imho.
Good luck with your journey!