No. You're going the wrong way. You want the Number 11. It stops in front of the post office.
不去。你乘错车了。你要乘11路。它在邮局门前停站。
I am sorry that you have a disagreement with your father. Personally, I think it is important to follow your interests and your abilities, and it sounds as though you have plenty of both of these already.
我感到遗憾,你和你父亲意见不一致。就我自己而言,我认为重要的是从你的兴趣和能力出发,听起来好像你已具备了这两点。