I am born on 16 july 1973 n met a chatmate, born on 30 jun 1970. Are we compatible?

Yes, you are doomed to stay together. You will do pretty nice in both of your industry and you want to take responsibilty in daily life. For business, you can struggle to gain as much as possible. In daily life, both of you want to enjoy the high quality life.
For the real situation, you can check him in the daily life and you find no big problems, I think you can marry him.