1. You can probably do FFS whenever as it's a cosmetic thing. Bone structure isn't going to change. Things like rhinoplasty are done by anyone regardless of gender. However, I would recommend waiting simply because your fat distribution will change, so whatever you get done now may not look quite the same later. I mean, the difference could be minimal, it's just my recommendation. I'd say the same about breast augmentation, because again the hormones will make changes and may affect appearance.
2. Blood clot risk is real, but it's real with cis women as well. Staying active and healthy should be a priority regardless.
3. I thought it was two years 'real-life experience' (living full-time as a woman) before the surgery but I could be wrong. I believe this is to minimize the chances of making the wrong decision or an ill-informed decision. Some end up not desiring the surgery even if they started out wanting it. It's a big decision that should be given some time and thought. I think the wait time is also to minimize the shock, easing you into the psychological and social changes first.
4. This can vary. My equipment became very estrogenized, shrunk, and my sex drive transitioned too. So this has made penetration with it undesirable and difficult for me. I have trouble maintaining erections for long enough to have sex using it, and erections often hurt but I think this might be because I keep it pulled back in my panties all the time and it's become curved as a result. However I think giving it a 'work out' regularly can negate some or most of these effects.
5. Stopping HRT for surgery is pretty necessary I believe, but I haven't really looked into it. Others here would know better than I would. But I've been off my hormones before, and it's tolerable especially after some time because it takes a bit for testosterone to come back up if you've gotten your levels down pretty low. I was off my pills for a month before, and I was fine the first 2-3 weeks. But for a week or 2 before I went back on 'em, I could tell my t-levels were up because my sex drive became more male-typical and increased, and I was a bit more aggressive and on edge. I wouldn't worry too much about it, you probably wouldn't be off 'em for tooo long.
6. Depends on what hair you're talking about. My body hair regrowth has slowed quite a lot and hairs are a lot thinner, making them hardly noticeable. Takes some time though. And you'll still get regrowth most likely, but then cis women often deal with unwanted hair as well.
As for head hair, well.. I wouldn't rely solely on hormones. I've heard it's possible to maybe get at least some regrowth, but there are better methods out there for dealing with that.
7. You'll get varying opinions about progesterone, but I think it's beneficial. Just take notice of your body and your moods if you go on medroxyprogesterone because many have had negative effects from it including mood swings and depression. But mood swings alone aren't necessarily an indicator as estrogen alone can cause them, especially if you develop a cycle. You'll just have to figure out what your new emotional range is and see if your mood swings go to extremes or outside that range frequently.. or if negative feelings persist. This is something you should bring up with your endo.
8. This is up to you, and another thing to discuss with your endo. Pills are going to go through your liver, and I've heard this can put unnecessary strain on it, but as of now I haven't experienced any problems with it. I suppose time will tell.
9. Pretty sure it's possible depending on your provider and plan, but this will vary.
Just pay attention to what your mind and body are telling you, stay healthy and active, ask your endo questions at regular check-ups, and get your blood tested regularly.
