Hi friend. I can see that you are having what some may call the standard depression kicking in and the "can I ever pass" phase along with my family won't accept me kind of stuff. I know, I'm in the same craptastic boat ride. Though I'm only a few years older than you, It's not too far off myself.
Being 21, yea I get the whole "binge" drinking aspect. Life for people our age is so much harder and depressing than it was for people 20 or 30 years ago. The job market has gotten tough to get into, You gotta spend a lot of money on a degree and hope to god there's jobs available for it. Social Media has risen through the roof and if you say or do one thing everyone is all up on your business. Life has indeed gotten harder to prevail through if you're by yourself. I know alcohol can taste great and it helps to drown sorrows. It's done more than a few times for me. The key is to keep yourself in moderation when you do drink otherwise you're going to end up in a body bag. Binge drinking is just the worst on your body. I have an alcoholic in my family, another who can be borderline, and another who died from liver poisoning. It will tear what's left of your family apart. Trust me. I get that you're young and outgoing, but you need to get a grip on drinking now.
The LGBT movement has picked up and it's getting easier for people like us in the world. The passing part is extremely tough to deal with. I've gone out once dressed up since thinking about becoming a woman. It's feels like you're walking around buck naked in your hs and all of your friends are just looking at you. Yes this is how it feels, but in the real world most people don't really care. They go about their lives. Typically they'd look at you and think geez that's an ugly woman, but they don't say anything and just keep walking. Of course if you're gonna look like a cross dresser and walking in clothing that stick out and wear a ->-bleeped-<- ton of make-up, Than yes you will get clocked and people will say stuff. Study woman when you go out and see what they are wearing, how they react to situations, what they drink and eat, and how they look. Following these steps are the easiest ways to blend into society and not get noticed. Now I know you mentioned being tall and having a "manly" face. You are young. The effects of estrogen on your body are likely to have a great result with lots of fat areas moving along to proper area, and if you're really lucky you might feel shifts in your bone mass and muscles. This would really help you fit more into the role. With your face, if it does in fact bother that much, just wait until you've been on estrogen for about a year or 2. If you still don't like than there's facial surgeries that can help. Of course they are expensive, but could mean you being happier for the future. Also don't worry about the hair. Estrogen is supposed to help. If not you could always take biotin, which is supposed to be good for hair and nails.
Yes the job part and having money for all of this is about the worst fear of them all. How can I go through all of this if I can't find a job that accepts me? How will I be able to afford all of this? What If I end up on the streets? These are tough questions you have to ask yourself when you get there. My suggestion is to start saving money now by drinking less. Put money aside. Find a job that will get you a decent amount of hours. If you're in school still, might want to look for a job that gives at least 20 hrs a week. If you looking for a job than find a full time one. These are what you need to cover first before even considering everything. Once you get yourself a foot in the door try to be with them for a year if possible. This way if your were to come out at work, you could use your role currently and have company experience. This would help even you even if they consider letting you go. Get them to say they will let you use them as a reference, even if you have to get it in writing. this can help when finding another job if need be.
Lastly please removal the suicidal thoughts. We are your friends. We are your family. Suicide should never be an option. Ever. You may feel as though your life will never get better and that ending it all will be better. It's not. You have to have a reason to live. Just because the world decided to dump it all on your shoulders to figure out doesn't mean it's all your problems. I understand living with your family may be tough, but like others have told me; if you have to drop them to better yourself, it may help you getting closer to being happy. It's hard to even think about. You need to find people in your area who are trans like ourselves. If there's no one there than it might be time to move to another area where you can be accepted and live your life.
Some of this may not have been the best advice. I'm sorry. There's only so much that I can offer to help. Like I said I'm in a similar boat and it feels like its sinking faster than I can remove the water from it. You just have to stay positive. That's my best advice. Stay positive. It'll get better eventually, but like everything else, it has to get worse before it can get better. Keep on keeping on.
You have a friend in me. Anytime you need to talk, I'm here for you. As well as everyone else on here. Fill free to load up the forum with rants to get stuff off your mind and chest. It really does help