I going to get All my hours?
Probably not, but that really will depend on the mood of the ANAC people that you deal with. There are variations between the different offices, and it pays to be polite. Where are you planning on going? Sometimes it pays to make contact with a local flying club too, they can often help out in these situations.
This is all pretty much a paper exercise, it won't make the slightest difference for about 7 years. You will not get a job flying until you become a citizen, and renting something for fun is just as easy on FAA docs.
A question for you. Why are you so keen to convert your certificates now?