If you are not comfortable with the English language, you are probably better off in your native tongue. This is a completely personal decision!

It comes down to who your target audience is. good luck.

You need to think about your target audience, who do you want to speak to and attract? Who is going to connect with you and trust you?

hey Fabio, you might just have to weight out your options. Where are you gonna get most of your traffic? If you believe that you can get a lot of visitors with a website in Portuguese, I think you should. But if you feel that keeping it English will get you more, then you might want to stick with it in English. Your website looks good. Maybe you can have your friends who speaks really good English check it out and see what needs to be adjusted. Maybe someone that can sit down with you and go through your website and make changes as you go. Sorry I didn't get a chance to go through the whole thing, I'm in Hawaii and it's getting pretty late here. just got off work.