I know a few transgender people and am non-binary myself, so I have some idea how you feel In my case though, I have no intention of telling my parents because my relationship with them isn't that good and it would only cause unnecessary grief.

You might find as you get older, as some transgender people do, that your physical body isn't as important as it is now and their dysphoria isn't as aggressive- as long as they 'pass' in public, what they have or haven't got is a matter for a 'need to know' basis, so I wouldn't go for the full panic right now. You don't need to overload yourself or your father with your entire life plan of surgery. The very idea that his son, who I imagine he has a mental image and life plan for, is actually his daughter will be shocking enough and it will be many years before surgery even becomes an option for you.

Do you have other family members you think would be more open to the idea? If so, it would probably be a good idea to get others on-side first and they may even have ideas on how to break it to him. If you really believe your father may act aggressively towards you, perhaps it might be a good idea to think about what you would do if he did- is there anywhere else you can go? Would it be better to wait and tell him when you are a little bit older (I know how it can hurt to hide something like that about yourself though)?

Good luck.