So I am writing just to tell the end of my story
I was so afraid of something goes wrong at the border that I decided to apply on paper.
What happened to me was: I was living in Canada and my status was Visitor and I sent my application to the office in Vegreville AB. And after 3 weeks I just saw on the CIC website that I could not have done it. So I requested my refund online and sent a letter requesting a withdrawal of my application.
In the meantime, I had to apply for my Tourist Extension and my current status after that was implied.
My husband and I we had some personal issues about the deadline for the new office that we were supposed to send the documents (Brazil or New York), so we decided to call CIC and ask about the Port Of Entry application. And for some reasons, we decided that the right thing would be to go to the border.
We went to the border on Jan 12, 2018 - the process lasted almost 2 hours. We arrive 8:40 pm and the officer took a look at the documents that both Jonnie and the Government advised us to take (Job offer, SINP letters, resume, compliance fee, offer ID number and Valid passport). After that the officer called just my husband to a room for an interview, which lasted like 40 minutes, and asked a lot of things about: where we were staying, how do we find the job, our lives in Brazil, what we were doing in Canada and what we will do, how much money do we have, who we met, and another questions.
The officer still asked for a lot of documents that no one advised us, (marriage certificate, proof of funds, medical exams, application of visitor extension, currency converter, recommendation letter from Brazil of his last employment, all the professional credentials ) but like Jonnie said we took all the documents to help the process.
After the interview, the officer still took about 40 minutes to look all the documents until he calls us to the great news: my husband 2 years closed work permit and mine open for 2 years.
We asked the refund for the visitor extension too!
Thank you, Jonnie for the help (I'm a little stubborn lol) and I hope my story can help others in the future!
Now I'm starting my process for PR! Good luck to all of us!