Seems like you have already chosen your path. Nonetheless: don't get those fake boobs. No fake boob could reach the real ones and you need to renew them after 10-15 years. And: each time you will get new scars and new pain... Seems like a bad deal.
You should strive for the body you want, not what others want. If bigger boobs better match how you see yourself, then absolutely go for it. But do it for you, not us. It's like trans people having work done to better match how they feel inside; it's not really about others, it's how about they feel when they look in a mirror and what they see matches their mental model. Do what you feel is right.
You should have the body you want, if that's natural or small then go for that.
If you are asking for the input of someone who loves big tits then the answer is probably about 1000cc. Depends on your overall height and chest measurement. Up to 2000cc looks pretty great. Of course this wouldn't be right away. Gotta work up to it.