In order to get the license you don't really need to speak Porto that well.
The air law test is a piece of cake, you can go to any escola de aviacao civil and get a pirated copy of the questions.
The ck flight can be done in English, at least here in Rio, all the military ck guys speak English and few from ANAC do to...well English..something like that.
When I got my English test here, the lady at ANAC in SP, spoke English worst than me (it's not my mother language), on my foreign license I got a 4 but here in Brazil they gave me a 6, the test is like 15 minutes long and the lady asked me what i think about female pilots, btw when I got scheduled I was supposed to take the test at 3 in the afternoon, I flew to SP from Rio just for that, but when I got there they told me I was supposed to be there at 11, what? and the lady would not be able to do my test???? after talking to them for an hour they decided to make me take the test.....